Gitiles
Code Review Sign In
git.eclipse.org / objectteams / org.eclipse.objectteams / c2dd2316985a696cabe3a7b4399c598b80c9c684 / . / org.eclipse.jdt.core.tests.compiler / src / org / eclipse / jdt / core / tests / compiler / regression / AmbiguousMethodTest.java
blob: a44a37133017901b9bef8fc18443219ac665dff6 [file] [log] [blame]
/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - Contribution for
* bug 395681 - [compiler] Improve simulation of javac6 behavior from bug 317719 after fixing bug 388795
*******************************************************************************/
package org.eclipse.jdt.core.tests.compiler.regression;
import java.util.Map;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import junit.framework.*;
public class AmbiguousMethodTest extends AbstractComparableTest {
static {
// TESTS_NAMES = new String [] { "test010a" };
}
public AmbiguousMethodTest(String name) {
super(name);
}
public static Test suite() {
return buildComparableTestSuite(testClass());
}
public static Class testClass() {
return AmbiguousMethodTest.class;
}
protected Map getCompilerOptions() {
Map compilerOptions = super.getCompilerOptions();
compilerOptions.put(CompilerOptions.OPTION_ReportMissingOverrideAnnotationForInterfaceMethodImplementation, CompilerOptions.DISABLED);
return compilerOptions;
}
public void test000() {
this.runConformTest(
new String[] {
"Test.java",
"public class Test { public static void main(String[] args) { new B().foo(new C()); } }\n" +
"class A { void foo(A a) {} }\n" +
"class B extends A { void foo(B b) { System.out.println(1); } }\n" +
"class C extends B {}"
},
"1"
);
}
public void test000a() {
this.runConformTest(
new String[] {
"Test.java",
"public class Test { public static void main(String[] args) { new Subtype<String>().foo(1, \"works\"); } }\n" +
"class Supertype<T1> { <U1> void foo(U1 u, T1 t) {} }\n" +
"class Subtype <T2> extends Supertype<T2> { <U3> void foo(U3 u, T2 t) { System.out.println(t); } }"
},
"works"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=122881
public void test001() {
this.runConformTest(
new String[] {
"C.java",
"public class C { public static void main(String[] args) { new B().m(\"works\"); } }\n" +
"class B extends A { @Override <T extends Comparable<T>> void m(T t) { System.out.println(t); } }\n" +
"abstract class A { abstract <T extends Comparable<T>> void m(T t); }"
},
"works"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=122881
public void test002() {
if (this.complianceLevel < ClassFileConstants.JDK1_7) {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" static interface I1<E1> { void method(E1 o); }\n" +
" static interface I2<E2> { void method(E2 o); }\n" +
" static interface I3<E3, E4> extends I1<E3>, I2<E4> {}\n" +
" static class Class1 implements I3<String, String> {\n" +
" public void method(String o) { System.out.println(o); }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" I3<String, String> i = new Class1();\n" +
" i.method(\"works\");\n" +
" }\n" +
"}"
},
"works");
} else {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" static interface I1<E1> { void method(E1 o); }\n" +
" static interface I2<E2> { void method(E2 o); }\n" +
" static interface I3<E3, E4> extends I1<E3>, I2<E4> {}\n" +
" static class Class1 implements I3<String, String> {\n" +
" public void method(String o) { System.out.println(o); }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" I3<String, String> i = new Class1();\n" +
" i.method(\"works\");\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" static interface I3<E3, E4> extends I1<E3>, I2<E4> {}\n" +
" ^^\n" +
"Name clash: The method method(E2) of type X.I2<E2> has the same erasure as method(E1) of type X.I1<E1> but does not override it\n" +
"----------\n");
}
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=122881
public void test002a() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" static interface I1<E> { void method(E o); }\n" +
" static interface I2<E> { void method(E o); }\n" +
" static interface I3<E> extends I1<E>, I2<E> {}\n" +
" static class Class1 implements I3<String> {\n" +
" public void method(String o) { System.out.println(o); }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" I3<String> i = new Class1();\n" +
" i.method(\"works\");\n" +
" }\n" +
"}"
},
"works"
);
}
public void test003() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X { void foo() { new BB().test(); } }\n" +
"class AA<T> { void test() {} }\n" +
"class BB extends AA<CC> { <U> void test() {} }\n" +
"class CC {}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 1)\n" +
" public class X { void foo() { new BB().test(); } }\n" +
" ^^^^\n" +
"The method test() is ambiguous for the type BB\n" +
"----------\n" +
"2. ERROR in X.java (at line 3)\n" +
" class BB extends AA<CC> { <U> void test() {} }\n" +
" ^^^^^^\n" +
"Name clash: The method test() of type BB has the same erasure as test() of type AA<T> but does not override it\n" +
"----------\n"
);
}
public void test003a() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void singleMatch() { System.out.print(new BB().test(new N(), new Integer(1))); }\n" +
" void betterMatch() { System.out.print(new CC().test(new N(), new Integer(1))); }\n" +
" void worseMatch() { System.out.print(new DD().test(new N(), new Integer(1))); }\n" +
" public static void main(String[] s) {\n" +
" new X().singleMatch();\n" +
" new X().betterMatch();\n" +
" new X().worseMatch();\n" +
" }\n" +
"}\n" +
"class AA<T> { int test(T t, Number num) { return 1; } }\n" +
"class BB extends AA<N> { @Override int test(N n, Number num) { return 2; } }\n" +
"class CC extends AA<M> { <U extends Number> int test(N n, U u) { return 3; } }\n" +
"class DD extends AA<N> { <U extends Number> int test(M m, U u) { return 4; } }\n" +
"class M {}\n" +
"class N extends M {}",
},
"231"
);
}
public void test003b() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void ambiguous() { new BB().test(new N()); }\n" +
" void exactMatch() { new CC().test(new N()); }\n" +
"}\n" +
"class AA<T> { void test(T t) {} }\n" +
"class BB extends AA<N> { <U> void test(N n) {} }\n" +
"class CC extends AA<N> { @Override void test(N n) {} }\n" +
"class M {}\n" +
"class N extends M {}",
},
"----------\n" +
"1. ERROR in X.java (at line 2)\r\n" +
" void ambiguous() { new BB().test(new N()); }\r\n" +
" ^^^^\n" +
"The method test(N) is ambiguous for the type BB\n" +
"----------\n"
);
}
public void test003c() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void ambiguous() { new BB().test(new N(), new Integer(1)); }\n" +
"}\n" +
"class AA<T> { void test(T t, Integer i) {} }\n" +
"class BB extends AA<M> { <U extends Number> void test(N n, U u) {} }\n" +
"class M {}\n" +
"class N extends M {}",
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" void ambiguous() { new BB().test(new N(), new Integer(1)); }\n" +
" ^^^^\n" +
"The method test(N, Integer) is ambiguous for the type BB\n" +
"----------\n"
);
}
public void test004() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void test(M<Integer> m) {\n" +
" m.id(new Integer(111));\n" +
" }\n" +
"}\n" +
"class C<T extends Number> { public void id(T t) {} }\n" +
"class M<TT> extends C<Integer> { public <ZZ> void id(Integer i) {} }\n"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" m.id(new Integer(111));\n" +
" ^^\n" +
"The method id(Integer) is ambiguous for the type M<Integer>\n" +
"----------\n"
// reference to id is ambiguous, both method id(A) in C<java.lang.Integer> and method id(B) in M<java.lang.Integer,java.lang.Integer> match
);
}
public void test004a() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void test(M<Integer> m) {\n" +
" m.id(new Integer(111));\n" +
" }\n" +
"}\n" +
"class C<T extends Number> { public void id(T t) {} }\n" +
"class M<TT> extends C<Integer> { public void id(Integer i) {} }\n"
},
""
);
}
public void test005() {
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6182950
String expectedCompilerLog = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" <S extends A> void foo() { }\n" +
" ^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n" +
"2. WARNING in X.java (at line 3)\n" +
" <N extends B> N foo() { return null; }\n" +
" ^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n" +
"3. ERROR in X.java (at line 5)\n" +
" new X().foo();\n" +
" ^^^\n" +
"The method foo() is ambiguous for the type X\n" +
"----------\n":
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" <S extends A> void foo() { }\n" +
" ^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 3)\n" +
" <N extends B> N foo() { return null; }\n" +
" ^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" <S extends A> void foo() { }\n" +
" <N extends B> N foo() { return null; }\n" +
" void test () {\n" +
" new X().foo();\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B {}\n"
},
expectedCompilerLog);
/* javac 7
X.java:3: name clash: <N>foo() and <S>foo() have the same erasure
<N extends B> N foo() { return null; }
^
where N,S are type-variables:
N extends B declared in method <N>foo()
S extends A declared in method <S>foo()
1 error
*/
}
public void test006() {
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6182950
String expectedCompilerLog = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" new Y<Object>().foo(\"X\");\n" +
" ^^^\n" +
"The method foo(Object) is ambiguous for the type Y<Object>\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" new Y<Object>().foo2(\"X\");\n" +
" ^^^^\n" +
"The method foo2(Object) is ambiguous for the type Y<Object>\n" +
"----------\n" +
"3. WARNING in X.java (at line 10)\n" +
" void foo(T2 t) {}\n" +
" ^^^^^^^^^\n" +
"Name clash: The method foo(T2) of type Y<T2> has the same erasure as foo(U1) of type X<T> but does not override it\n" +
"----------\n" +
"4. WARNING in X.java (at line 11)\n" +
" <U3> void foo2(T2 t) {}\n" +
" ^^^^^^^^^^\n" +
"Name clash: The method foo2(T2) of type Y<T2> has the same erasure as foo2(U2) of type X<T> but does not override it\n" +
"----------\n":
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" new Y<Object>().foo(\"X\");\n" +
" ^^^\n" +
"The method foo(Object) is ambiguous for the type Y<Object>\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" new Y<Object>().foo2(\"X\");\n" +
" ^^^^\n" +
"The method foo2(Object) is ambiguous for the type Y<Object>\n" +
"----------\n" +
"3. ERROR in X.java (at line 10)\n" +
" void foo(T2 t) {}\n" +
" ^^^^^^^^^\n" +
"Name clash: The method foo(T2) of type Y<T2> has the same erasure as foo(U1) of type X<T> but does not override it\n" +
"----------\n" +
"4. ERROR in X.java (at line 11)\n" +
" <U3> void foo2(T2 t) {}\n" +
" ^^^^^^^^^^\n" +
"Name clash: The method foo2(T2) of type Y<T2> has the same erasure as foo2(U2) of type X<T> but does not override it\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" void test() {\n" +
" new Y<Object>().foo(\"X\");\n" +
" new Y<Object>().foo2(\"X\");\n" +
" }\n" +
" <U1> U1 foo(U1 t) {return null;}\n" +
" <U2> U2 foo2(U2 t) {return null;}\n" +
"}\n" +
"class Y<T2> extends X<T2> {\n" +
" void foo(T2 t) {}\n" +
" <U3> void foo2(T2 t) {}\n" +
"}\n"
},
expectedCompilerLog
);
/* javac 7
X.java:3: reference to foo is ambiguous, both method <U1>foo(U1) in X and method
foo(T2) in Y match
new Y<Object>().foo("X");
^
where U1,T2 are type-variables:
U1 extends Object declared in method <U1>foo(U1)
T2 extends Object declared in class Y
X.java:4: reference to foo2 is ambiguous, both method <U2>foo2(U2) in X and meth
od <U3>foo2(T2) in Y match
new Y<Object>().foo2("X");
^
where U2,U3,T2 are type-variables:
U2 extends Object declared in method <U2>foo2(U2)
U3 extends Object declared in method <U3>foo2(T2)
T2 extends Object declared in class Y
X.java:10: name clash: foo(T2) in Y and <U1>foo(U1) in X have the same erasure,
yet neither overrides the other
void foo(T2 t) {}
^
where T2,U1 are type-variables:
T2 extends Object declared in class Y
U1 extends Object declared in method <U1>foo(U1)
X.java:11: name clash: <U3>foo2(T2) in Y and <U2>foo2(U2) in X have the same era
sure, yet neither overrides the other
<U3> void foo2(T2 t) {}
^
where U3,T2,U2 are type-variables:
U3 extends Object declared in method <U3>foo2(T2)
T2 extends Object declared in class Y
U2 extends Object declared in method <U2>foo2(U2)
4 errors
*/
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=129056
public void test007() {
this.runNegativeTest(
new String[] {
"B.java",
"public class B {\n" +
" public static void main(String[] args) {\n" +
" new M().foo(new Integer(1), 2);\n" +
" new N().foo(new Integer(1), 2);\n" +
" }\n" +
"}" +
"interface I { void foo(Number arg1, Number arg2); }\n" +
"class M {\n" +
" public void foo(int arg1, int arg2) {}\n" +
" public void foo(Number arg1, Number arg2) {}\n" +
"}\n" +
"class N implements I {\n" +
" public void foo(int arg1, int arg2) {}\n" +
" public void foo(Number arg1, Number arg2) {}\n" +
"}\n"
},
"----------\n" +
"1. ERROR in B.java (at line 3)\r\n" +
" new M().foo(new Integer(1), 2);\r\n" +
" ^^^\n" +
"The method foo(int, int) is ambiguous for the type M\n" +
"----------\n" +
"2. ERROR in B.java (at line 4)\r\n" +
" new N().foo(new Integer(1), 2);\r\n" +
" ^^^\n" +
"The method foo(int, int) is ambiguous for the type N\n" +
"----------\n"
// reference to foo is ambiguous, both method foo(int,int) in M and method foo(java.lang.Number,java.lang.Number) in M match
// reference to foo is ambiguous, both method foo(int,int) in N and method foo(java.lang.Number,java.lang.Number) in N match
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=123943 - case 1
public void test008() {
this.runConformTest(
new String[] {
"AA.java",
"public class AA {\n" +
" public static void main(String[] a) { System.out.print(new C().test(new T())); }\n" +
"}" +
"class S {}\n" +
"class T extends S {}\n" +
"class B { <U extends S> int test(U u) {return -1;} }\n" +
"class C extends B { @Override int test(S s) {return 1;} }"
},
"1"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=123943 - case 1
public void test008a() {
this.runNegativeTest(
new String[] {
"A.java",
"public class A { void check() { new C().test(new T()); } }\n" +
"class S {}\n" +
"class T extends S {}\n" +
"class B { int test(S s) {return 1;} }\n" +
"class C extends B { <U extends S> int test(U u) {return -1;} }"
},
"----------\n" +
"1. ERROR in A.java (at line 1)\n" +
" public class A { void check() { new C().test(new T()); } }\n" +
" ^^^^\n" +
"The method test(T) is ambiguous for the type C\n" +
"----------\n" +
"2. ERROR in A.java (at line 5)\n" +
" class C extends B { <U extends S> int test(U u) {return -1;} }\n" +
" ^^^^^^^^^\n" +
"Name clash: The method test(U) of type C has the same erasure as test(S) of type B but does not override it\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=123943 - case 2
public void test009() {
this.runConformTest(
new String[] {
"T.java",
"import java.util.*;\n" +
"public class T {\n" +
" void test() {\n" +
" OrderedSet<String> os = null;\n" +
" os.add(\"hello\");\n" +
" OrderedSet<Integer> os2 = null;\n" +
" os2.add(1);\n" +
" }\n" +
"}" +
"interface OrderedSet<E> extends List<E>, Set<E> { boolean add(E o); }\n"
},
""
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=121024
public void test010a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" interface Listener {}\n" +
" interface ErrorListener {}\n" +
" static <L1 extends Listener & ErrorListener> Object createParser(L1 l) { return null; }\n" +
" static <L2 extends ErrorListener & Listener> Object createParser(L2 l) { return null; }\n" +
" public static void main(String[] s) {\n" +
" class A implements Listener, ErrorListener {}\n" +
" createParser(new A());\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" createParser(new A());\n" +
" ^^^^^^^^^^^^\n" +
"The method createParser(A) is ambiguous for the type X\n" +
"----------\n"
);
// javac 7 randomly picks which ever method is second
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=121024
public void test010b() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" interface Listener {}\n" +
" interface ErrorListener {}\n" +
" static <L1 extends Listener> int createParser(L1 l) { return 1; }\n" +
" static <L2 extends ErrorListener & Listener> int createParser(L2 l) { return 2; }\n" +
" public static void main(String[] s) {\n" +
" class A implements Listener, ErrorListener {}\n" +
" System.out.print(createParser(new A()));\n" +
" }\n" +
"}"
},
"2"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=121024
public void test010c() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" interface Listener {}\n" +
" interface ErrorListener {}\n" +
" static int createParser(Listener l) { return 1; }\n" +
" static <L extends ErrorListener & Listener> int createParser(L l) { return 2; }\n" +
" public static void main(String[] s) {\n" +
" class A implements Listener, ErrorListener {}\n" +
" System.out.print(createParser(new A()));\n" +
" }\n" +
"}"
},
"2"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=106090
public void test011() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<A extends Number> extends Y<A> {\n" +
" <T> void foo(A n, T t) throws ExOne {}\n" +
" void test(X<Integer> x) throws ExTwo { x.foo(new Integer(1), new Integer(2)); }\n" +
" void test2(X x) throws ExTwo { x.foo(new Integer(1), new Integer(2)); }\n" +
"}\n" +
"class Y<C extends Number> {\n" +
" void foo(C x, C n) throws ExTwo {}\n" +
"}\n" +
"class ExOne extends Exception {static final long serialVersionUID = 1;}\n" +
"class ExTwo extends Exception {static final long serialVersionUID = 2;}"
},
"----------\n" +
"1. WARNING in X.java (at line 4)\n" +
" void test2(X x) throws ExTwo { x.foo(new Integer(1), new Integer(2)); }\n" +
" ^\n" +
"X is a raw type. References to generic type X<A> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 4)\n" +
" void test2(X x) throws ExTwo { x.foo(new Integer(1), new Integer(2)); }\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The method foo(Number, Number) belongs to the raw type Y. References to generic type Y<C> should be parameterized\n" +
"----------\n"
// test2 - warning: [unchecked] unchecked call to foo(C,C) as a member of the raw type Y
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=106090
public void test011a() {
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6182950
String expectedCompilerLog = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. WARNING in Combined.java (at line 2)\n" +
" <T extends Comparable<T>> void pickOne(T value) throws ExOne {}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(T) is the same as another method in type Combined<A,B>\n" +
"----------\n" +
"2. WARNING in Combined.java (at line 3)\n" +
" <T> T pickOne(Comparable<T> value) throws ExTwo { return null;}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(Comparable<T>) is the same as another method in type Combined<A,B>\n" +
"----------\n":
"----------\n" +
"1. ERROR in Combined.java (at line 2)\n" +
" <T extends Comparable<T>> void pickOne(T value) throws ExOne {}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(T) is the same as another method in type Combined<A,B>\n" +
"----------\n" +
"2. ERROR in Combined.java (at line 3)\n" +
" <T> T pickOne(Comparable<T> value) throws ExTwo { return null;}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(Comparable<T>) is the same as another method in type Combined<A,B>\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"Combined.java",
"public class Combined<A, B> {\n" +
" <T extends Comparable<T>> void pickOne(T value) throws ExOne {}\n" +
" <T> T pickOne(Comparable<T> value) throws ExTwo { return null;}\n" +
" void pickOne(Combined<Integer,Integer> c) throws ExOne { c.pickOne(\"test\"); }\n" +
" <T extends Number> void pickTwo(Number n, T t) throws ExOne {}\n" +
" void pickTwo(A x, Number n) throws ExTwo {}\n" +
" void pickTwo(Combined<Integer,Integer> c) throws ExTwo { c.pickTwo(new Integer(1), 2); }\n" +
"}\n" +
"class ExOne extends Exception {static final long serialVersionUID = 1;}\n" +
"class ExTwo extends Exception {static final long serialVersionUID = 2;}"
},
expectedCompilerLog
);
/* javac 7
X.java:3: name clash: <T#1>pickOne(Comparable<T#1>) and <T#2>pickOne(T#2) have the same erasure
<T> T pickOne(Comparable<T> value) throws ExTwo { return null;}
^
where T#1,T#2 are type-variables:
T#1 extends Object declared in method <T#1>pickOne(Comparable<T#1>)
T#2 extends Comparable<T#2> declared in method <T#2>pickOne(T#2)
1 error
*/
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=106090
public void test011b() {
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6182950
String expectedCompilerLog = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. WARNING in Test1.java (at line 2)\n" +
" <T extends Comparable<T>> void pickOne(T value) throws ExOne {}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(T) is the same as another method in type Test1<AA,BB>\n" +
"----------\n" +
"2. WARNING in Test1.java (at line 3)\n" +
" <T> T pickOne(Comparable<T> value) throws ExTwo { return null;}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(Comparable<T>) is the same as another method in type Test1<AA,BB>\n" +
"----------\n" +
"3. WARNING in Test1.java (at line 4)\n" +
" void pickOne2(Test1<Integer,Integer> c) throws ExOne { c.pickOne((Comparable) \"test\"); }\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: Unchecked invocation pickOne(Comparable) of the generic method pickOne(T) of type Test1<Integer,Integer>\n" +
"----------\n" +
"4. WARNING in Test1.java (at line 4)\n" +
" void pickOne2(Test1<Integer,Integer> c) throws ExOne { c.pickOne((Comparable) \"test\"); }\n" +
" ^^^^^^^^^^\n" +
"Comparable is a raw type. References to generic type Comparable<T> should be parameterized\n" +
"----------\n":
"----------\n" +
"1. ERROR in Test1.java (at line 2)\n" +
" <T extends Comparable<T>> void pickOne(T value) throws ExOne {}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(T) is the same as another method in type Test1<AA,BB>\n" +
"----------\n" +
"2. ERROR in Test1.java (at line 3)\n" +
" <T> T pickOne(Comparable<T> value) throws ExTwo { return null;}\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method pickOne(Comparable<T>) is the same as another method in type Test1<AA,BB>\n" +
"----------\n" +
"3. WARNING in Test1.java (at line 4)\n" +
" void pickOne2(Test1<Integer,Integer> c) throws ExOne { c.pickOne((Comparable) \"test\"); }\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: Unchecked invocation pickOne(Comparable) of the generic method pickOne(T) of type Test1<Integer,Integer>\n" +
"----------\n" +
"4. WARNING in Test1.java (at line 4)\n" +
" void pickOne2(Test1<Integer,Integer> c) throws ExOne { c.pickOne((Comparable) \"test\"); }\n" +
" ^^^^^^^^^^\n" +
"Comparable is a raw type. References to generic type Comparable<T> should be parameterized\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"Test1.java",
"public class Test1<AA, BB> {\n" +
" <T extends Comparable<T>> void pickOne(T value) throws ExOne {}\n" +
" <T> T pickOne(Comparable<T> value) throws ExTwo { return null;}\n" +
" void pickOne2(Test1<Integer,Integer> c) throws ExOne { c.pickOne((Comparable) \"test\"); }\n" +
"}\n" +
"class ExOne extends Exception {static final long serialVersionUID = 1;}\n" +
"class ExTwo extends Exception {static final long serialVersionUID = 2;}"
},
expectedCompilerLog
);
/* javac 7
X.java:3: name clash: <T#1>pickOne(Comparable<T#1>) and <T#2>pickOne(T#2) have the same erasure
<T> T pickOne(Comparable<T> value) throws ExTwo { return null;}
^
where T#1,T#2 are type-variables:
T#1 extends Object declared in method <T#1>pickOne(Comparable<T#1>)
T#2 extends Comparable<T#2> declared in method <T#2>pickOne(T#2)
X.java:4: warning: [unchecked] unchecked method invocation: method pickOne in class Test1 is applied to given types
void pickOne2(Test1<Integer,Integer> c) throws ExOne { c.pickOne((Comparable) "test"); }
^
required: T
found: Comparable
where T is a type-variable:
T extends Comparable<T> declared in method <T>pickOne(T)
1 error
1 warning
*/
}
public void test012() {
this.runConformTest(
new String[] {
"XX.java",
"public class XX {\n" +
" public static void main(String[] s) { System.out.println(new B().id(new Integer(1))); }\n" +
"}\n" +
"class A<T extends Number> { public int id(T t) {return 2;} }\n" +
"class B extends A<Integer> { public int id(Integer i) {return 1;} }"
},
"1"
);
}
public void test012a() {
this.runNegativeTest(
new String[] {
"XX.java",
"public class XX {\n" +
" public static void main(String[] s) { System.out.println(new B().id(new Integer(1))); }\n" +
"}\n" +
"class A<T extends Number> { public int id(T t) {return 2;} }\n" +
"class B extends A<Integer> { public <ZZ> int id(Integer i) {return 1;} }"
},
"----------\n" +
"1. ERROR in XX.java (at line 2)\r\n" +
" public static void main(String[] s) { System.out.println(new B().id(new Integer(1))); }\r\n" +
" ^^\n" +
"The method id(Integer) is ambiguous for the type B\n" +
"----------\n"
// reference to id is ambiguous, both method id(T) in A<java.lang.Integer> and method <ZZ>id(java.lang.Integer) in B match
);
}
public void test013() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" <E extends A> void m(E e) { System.out.print(1); }\n" +
" <E extends B> void m(E e) { System.out.print(2); }\n" +
" public static void main(String[] args) {\n" +
" new X().m(new A());\n" +
" new X().m(new B());\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n"
},
"12"
);
}
public void test014() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void a(G x) { System.out.print(1); }\n" +
" void b(F x) { System.out.print(2); }\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" G<C> g = null;\n" +
" new X().a(h);\n" +
" new X().a(g);\n" +
" new X().b(h);\n" +
" new X().b(g);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"1122"
);
}
public void test014a() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void a(G<C> x) { System.out.print(1); }\n" +
" void b(F<C> x) { System.out.print(2); }\n" +
" public static void main(String[] args) {\n" +
" H h = null;\n" +
" G g = null;\n" +
" new X().a(h);\n" +
" new X().a(g);\n" +
" new X().b(h);\n" +
" new X().b(g);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"1122"
);
}
public void test014b() {
this.runConformTest(
new String[] {
"X0.java",
"public class X0 {\n" +
" void two(G x) { System.out.print(1); }\n" +
" void two(F<A> x) { System.out.print(2); }\n" +
" void three(G x) { System.out.print(3); }\n" +
" void three(F<B> x) { System.out.print(4); }\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" new X0().two(h);\n" +
" new X0().three(h);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"13"
);
}
public void test014c() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void a(G x) {}\n" +
" void a(F<C> x) {}\n" +
" void b(G<C> x) {}\n" +
" void b(F x) {}\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" new X().a(h);\n" +
" new X().b(h);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"----------\n" +
"1. WARNING in X.java (at line 2)\r\n" +
" void a(G x) {}\r\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 5)\r\n" +
" void b(F x) {}\r\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"3. ERROR in X.java (at line 8)\r\n" +
" new X().a(h);\r\n" +
" ^\n" +
"The method a(G) is ambiguous for the type X\n" +
"----------\n"
// reference to a is ambiguous, both method a(G) in X and method a(F<C>) in X match
);
}
public void test014d() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void one(G<B> x) {}\n" +
" void one(F<B> x) {}\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" new X().one(h);\n" + // no match
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"----------\n" +
"1. ERROR in X.java (at line 6)\r\n" +
" new X().one(h);\r\n" +
" ^^^\n" +
"The method one(G<B>) in the type X is not applicable for the arguments (H<C>)\n" +
"----------\n"
);
}
public void test014e() {
this.runConformTest(
new String[] {
"X1.java",
"public class X1 {\n" +
" void two(G<C> x) { System.out.print(1); }\n" +
" void two(F<B> x) { System.out.print(2); }\n" +
" void three(G<B> x) { System.out.print(3); }\n" +
" void three(F<C> x) { System.out.print(4); }\n" +
" void four(G<C> x) { System.out.print(5); }\n" +
" void four(F<C> x) { System.out.print(6); }\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" new X1().two(h);\n" +
" new X1().three(h);\n" +
" new X1().four(h);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"145"
);
}
public void test014f() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" <E1, E2 extends B> void three(G<E2> x) {}\n" +
" <E3 extends C> void three(F<E3> x) {}\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" new X().three(h);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"----------\n" +
"1. ERROR in X.java (at line 6)\r\n" +
" new X().three(h);\r\n" +
" ^^^^^\n" +
"The method three(G<C>) is ambiguous for the type X\n" +
"----------\n"
);
}
public void test014g() {
this.runConformTest(
new String[] {
"X3.java",
"public class X3 {\n" +
" <E1, E2 extends B> void one(G<E2> x) { System.out.print(1); }\n" +
" <E3 extends B> void one(F<E3> x) { System.out.print(2); }\n" +
" <E1, E2 extends C> void two(G<E2> x) { System.out.print(3); }\n" +
" <E3 extends B> void two(F<E3> x) { System.out.print(4); }\n" +
" <E1, E2 extends C> void four(G<E2> x) { System.out.print(5); }\n" +
" <E3 extends C> void four(F<E3> x) { System.out.print(6); }\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" new X3().one(h);\n" +
" new X3().two(h);\n" +
" new X3().four(h);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"135"
);
}
public void test014h() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void x(G x) { System.out.print(true); }\n" +
" void x(F x) { System.out.print(false); }\n" +
" void x2(G<C> x) { System.out.print(true); }\n" +
" void x2(F<C> x) { System.out.print(false); }\n" +
" void a(G x) {}\n" +
" void a(F<C> x) {}\n" +
" void a2(G x) {}\n" +
" <T extends C> void a2(F<T> x) {}\n" +
" void a3(G x) {}\n" +
" <T extends F<C>> void a3(T x) {}\n" +
" void a4(G x) {}\n" +
" <T extends C, S extends F<T>> void a4(S x) {}\n" +
" <T extends G> void a5(T x) {}\n" +
" void a5(F<C> x) {}\n" +
" <T extends G> void a6(T x) {}\n" +
" <T extends C, S extends F<T>> void a6(S x) {}\n" +
" void b(G<C> x) { System.out.print(true); }\n" +
" void b(F x) { System.out.print(false); }\n" +
" void b2(G<C> x) { System.out.print(true); }\n" +
" <T extends F> void b2(T x) { System.out.print(false); }\n" +
" <T extends C> void b3(G<T> x) { System.out.print(true); }\n" +
" void b3(F x) { System.out.print(false); }\n" +
" <T extends G<C>> void b4(T x) { System.out.print(true); }\n" +
" void b4(F x) { System.out.print(false); }\n" +
" <T extends C, S extends G<T>> void b5(S x) { System.out.print(true); }\n" +
" void b5(F x) { System.out.print(false); }\n" +
" void c(G x) { System.out.print(true); }\n" +
" <T extends C> void c(F x) { System.out.print(false); }\n" +
" public static void main(String[] args) {\n" +
" H<C> h = null;\n" +
" H hraw = null;\n" +
" new X().x(h);\n" +
" new X().x(hraw);\n" +
" new X().x2(h);\n" +
" new X().x2(hraw);\n" +
" new X().b(h);\n" +
" new X().b(hraw);\n" +
" new X().b2(h);\n" +
" new X().b2(hraw);\n" +
" new X().b3(h);\n" +
" new X().b3(hraw);\n" +
" new X().b4(h);\n" +
" new X().b4(hraw);\n" +
" new X().b5(h);\n" +
" new X().b5(hraw);\n" +
" new X().c(h);\n" +
" new X().c(hraw);\n" +
" }\n" +
"}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> {}\n" +
"class H<T3> extends G<T3> {}"
},
"truetruetruetruetruetruetruetruetruetruetruetruetruetruetruetrue"
);
this.runNegativeTest(
new String[] {
"Y.java",
"public class Y extends X {\n" +
" public static void ambiguousCases() {\n" +
" H<C> h = null;\n" +
" H hraw = null;\n" +
" new X().a(h);\n" +
" new X().a(hraw);\n" +
" new X().a2(h);\n" +
" new X().a2(hraw);\n" +
" new X().a3(h);\n" +
" new X().a3(hraw);\n" +
" new X().a4(h);\n" +
" new X().a4(hraw);\n" +
" new X().a5(h);\n" +
" new X().a5(hraw);\n" +
" new X().a6(h);\n" +
" new X().a6(hraw);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. WARNING in Y.java (at line 4)\n" +
" H hraw = null;\n" +
" ^\n" +
"H is a raw type. References to generic type H<T3> should be parameterized\n" +
"----------\n" +
"2. ERROR in Y.java (at line 5)\n" +
" new X().a(h);\n" +
" ^\n" +
"The method a(G) is ambiguous for the type X\n" +
"----------\n" +
"3. ERROR in Y.java (at line 6)\n" +
" new X().a(hraw);\n" +
" ^\n" +
"The method a(G) is ambiguous for the type X\n" +
"----------\n" +
"4. ERROR in Y.java (at line 7)\n" +
" new X().a2(h);\n" +
" ^^\n" +
"The method a2(G) is ambiguous for the type X\n" +
"----------\n" +
"5. ERROR in Y.java (at line 8)\n" +
" new X().a2(hraw);\n" +
" ^^\n" +
"The method a2(G) is ambiguous for the type X\n" +
"----------\n" +
"6. ERROR in Y.java (at line 9)\n" +
" new X().a3(h);\n" +
" ^^\n" +
"The method a3(G) is ambiguous for the type X\n" +
"----------\n" +
"7. ERROR in Y.java (at line 10)\n" +
" new X().a3(hraw);\n" +
" ^^\n" +
"The method a3(G) is ambiguous for the type X\n" +
"----------\n" +
"8. ERROR in Y.java (at line 11)\n" +
" new X().a4(h);\n" +
" ^^\n" +
"The method a4(G) is ambiguous for the type X\n" +
"----------\n" +
"9. ERROR in Y.java (at line 12)\n" +
" new X().a4(hraw);\n" +
" ^^\n" +
"The method a4(G) is ambiguous for the type X\n" +
"----------\n" +
"10. ERROR in Y.java (at line 13)\n" +
" new X().a5(h);\n" +
" ^^\n" +
"The method a5(H<C>) is ambiguous for the type X\n" +
"----------\n" +
"11. ERROR in Y.java (at line 14)\n" +
" new X().a5(hraw);\n" +
" ^^\n" +
"The method a5(H) is ambiguous for the type X\n" +
"----------\n" +
"12. ERROR in Y.java (at line 15)\n" +
" new X().a6(h);\n" +
" ^^\n" +
"The method a6(H<C>) is ambiguous for the type X\n" +
"----------\n" +
"13. ERROR in Y.java (at line 16)\n" +
" new X().a6(hraw);\n" +
" ^^\n" +
"The method a6(H) is ambiguous for the type X\n" +
"----------\n",
null,
false
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=262209
public void test014i() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I<T> {}\n" +
"interface J<T> extends I<T> {}\n" +
"\n" +
"class X {\n" +
" void a(G x) {}\n" +
" <T extends C, S extends F<T>> void a(S x) {}\n" +
"\n" +
" void b(G x) {}\n" +
" void b(F x) {}\n" +
"\n" +
" void c(G x) {}\n" +
" void c(F<?> x) {}\n" +
"\n" +
" void d(G x) {}\n" +
" void d(F<C> x) {}\n" +
"\n" +
" void e(G x) {}\n" +
" <T extends C> void e(F<T> x) {}\n" +
"\n" +
" void f(G x) {}\n" +
" <S extends F> void f(S x) {}\n" +
"\n" +
" void g(G x) {}\n" +
" <S extends F & J<S>> void g(S x) {}\n" +
"\n" +
" <T extends G> void a2(T x) {}\n" +
" <T extends C, S extends F<T>> void a2(S x) {}\n" +
"\n" +
" <T extends G> void b2(T x) {}\n" +
" void b2(F x) {}\n" +
"\n" +
" <T extends G> void c2(T x) {}\n" +
" void c2(F<?> x) {}\n" +
"\n" +
" <T extends G> void d2(T x) {}\n" +
" void d2(F<C> x) {}\n" +
"\n" +
" <T extends G> void e2(T x) {}\n" +
" <T extends C> void e2(F<T> x) {}\n" +
"\n" +
" <T extends G> void f2(T x) {}\n" +
" <S extends F & J> void f2(S x) {}\n" +
"\n" +
" <T extends G> void g2(T x) {}\n" +
" <S extends F & J<S>> void g2(S x) {}\n" +
"\n" +
" void test() {\n" +
" X x = new X();\n" +
" H<C> h = null;\n" +
" H hraw = null;\n" +
"\n" +
" x.a(h);\n" +
" x.a(hraw);\n" +
"\n" +
" x.b(h);\n" +
" x.b(hraw);\n" +
"\n" +
" x.c(h);\n" +
" x.c(hraw);\n" +
"\n" +
" x.d(h);\n" +
" x.d(hraw);\n" +
"\n" +
" x.e(h);\n" +
" x.e(hraw);\n" +
"\n" +
" x.f(h);\n" +
" x.f(hraw);\n" +
"\n" +
" x.g(h);\n" +
" x.g(hraw);\n" +
"\n" +
" x.a2(h);\n" +
" x.a2(hraw);\n" +
"\n" +
" x.b2(h); \n" +
" x.b2(hraw);\n" +
"\n" +
" x.c2(h);\n" +
" x.c2(hraw);\n" +
"\n" +
" x.d2(h);\n" +
" x.d2(hraw);\n" +
"\n" +
" x.e2(h);\n" +
" x.e2(hraw);\n" +
"\n" +
" x.f2(h);\n" +
" x.f2(hraw);\n" +
"\n" +
" x.g2(h); \n" +
" x.g2(hraw);\n" +
" }\n" +
"}\n" +
"\n" +
"class A {}\n" +
"class B extends A {}\n" +
"class C extends B implements I {}\n" +
"class F<T1> {} \n" +
"class G<T2> extends F<T2> implements J<T2> {}\n" +
"class H<T3> extends G<T3> {}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" void a(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 8)\n" +
" void b(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 9)\n" +
" void b(F x) {}\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"4. WARNING in X.java (at line 11)\n" +
" void c(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"5. WARNING in X.java (at line 14)\n" +
" void d(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"6. WARNING in X.java (at line 17)\n" +
" void e(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"7. WARNING in X.java (at line 20)\n" +
" void f(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"8. WARNING in X.java (at line 21)\n" +
" <S extends F> void f(S x) {}\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"9. WARNING in X.java (at line 23)\n" +
" void g(G x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"10. WARNING in X.java (at line 24)\n" +
" <S extends F & J<S>> void g(S x) {}\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"11. WARNING in X.java (at line 26)\n" +
" <T extends G> void a2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"12. WARNING in X.java (at line 29)\n" +
" <T extends G> void b2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"13. WARNING in X.java (at line 30)\n" +
" void b2(F x) {}\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"14. WARNING in X.java (at line 32)\n" +
" <T extends G> void c2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"15. WARNING in X.java (at line 35)\n" +
" <T extends G> void d2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"16. WARNING in X.java (at line 38)\n" +
" <T extends G> void e2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"17. WARNING in X.java (at line 41)\n" +
" <T extends G> void f2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"18. WARNING in X.java (at line 42)\n" +
" <S extends F & J> void f2(S x) {}\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"19. WARNING in X.java (at line 42)\n" +
" <S extends F & J> void f2(S x) {}\n" +
" ^\n" +
"J is a raw type. References to generic type J<T> should be parameterized\n" +
"----------\n" +
"20. WARNING in X.java (at line 44)\n" +
" <T extends G> void g2(T x) {}\n" +
" ^\n" +
"G is a raw type. References to generic type G<T2> should be parameterized\n" +
"----------\n" +
"21. WARNING in X.java (at line 45)\n" +
" <S extends F & J<S>> void g2(S x) {}\n" +
" ^\n" +
"F is a raw type. References to generic type F<T1> should be parameterized\n" +
"----------\n" +
"22. WARNING in X.java (at line 50)\n" +
" H hraw = null;\n" +
" ^\n" +
"H is a raw type. References to generic type H<T3> should be parameterized\n" +
"----------\n" +
"23. ERROR in X.java (at line 52)\n" +
" x.a(h);\n" +
" ^\n" +
"The method a(G) is ambiguous for the type X\n" +
"----------\n" +
"24. ERROR in X.java (at line 53)\n" +
" x.a(hraw);\n" +
" ^\n" +
"The method a(G) is ambiguous for the type X\n" +
"----------\n" +
"25. ERROR in X.java (at line 58)\n" +
" x.c(h);\n" +
" ^\n" +
"The method c(G) is ambiguous for the type X\n" +
"----------\n" +
"26. ERROR in X.java (at line 59)\n" +
" x.c(hraw);\n" +
" ^\n" +
"The method c(G) is ambiguous for the type X\n" +
"----------\n" +
"27. ERROR in X.java (at line 61)\n" +
" x.d(h);\n" +
" ^\n" +
"The method d(G) is ambiguous for the type X\n" +
"----------\n" +
"28. ERROR in X.java (at line 62)\n" +
" x.d(hraw);\n" +
" ^\n" +
"The method d(G) is ambiguous for the type X\n" +
"----------\n" +
"29. ERROR in X.java (at line 64)\n" +
" x.e(h);\n" +
" ^\n" +
"The method e(G) is ambiguous for the type X\n" +
"----------\n" +
"30. ERROR in X.java (at line 65)\n" +
" x.e(hraw);\n" +
" ^\n" +
"The method e(G) is ambiguous for the type X\n" +
"----------\n" +
"31. ERROR in X.java (at line 71)\n" +
" x.g(hraw);\n" +
" ^\n" +
"The method g(G) is ambiguous for the type X\n" +
"----------\n" +
"32. ERROR in X.java (at line 73)\n" +
" x.a2(h);\n" +
" ^^\n" +
"The method a2(H<C>) is ambiguous for the type X\n" +
"----------\n" +
"33. ERROR in X.java (at line 74)\n" +
" x.a2(hraw);\n" +
" ^^\n" +
"The method a2(H) is ambiguous for the type X\n" +
"----------\n" +
"34. ERROR in X.java (at line 79)\n" +
" x.c2(h);\n" +
" ^^\n" +
"The method c2(H<C>) is ambiguous for the type X\n" +
"----------\n" +
"35. ERROR in X.java (at line 80)\n" +
" x.c2(hraw);\n" +
" ^^\n" +
"The method c2(H) is ambiguous for the type X\n" +
"----------\n" +
"36. ERROR in X.java (at line 82)\n" +
" x.d2(h);\n" +
" ^^\n" +
"The method d2(H<C>) is ambiguous for the type X\n" +
"----------\n" +
"37. ERROR in X.java (at line 83)\n" +
" x.d2(hraw);\n" +
" ^^\n" +
"The method d2(H) is ambiguous for the type X\n" +
"----------\n" +
"38. ERROR in X.java (at line 85)\n" +
" x.e2(h);\n" +
" ^^\n" +
"The method e2(H<C>) is ambiguous for the type X\n" +
"----------\n" +
"39. ERROR in X.java (at line 86)\n" +
" x.e2(hraw);\n" +
" ^^\n" +
"The method e2(H) is ambiguous for the type X\n" +
"----------\n" +
"40. ERROR in X.java (at line 92)\n" +
" x.g2(hraw);\n" +
" ^^\n" +
"The method g2(H) is ambiguous for the type X\n" +
"----------\n" +
"41. WARNING in X.java (at line 98)\n" +
" class C extends B implements I {}\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=79798
public void test015() {
this.runConformTest(
new String[] {
"E.java",
"public class E {\n" +
" public static void main(String[] s) {\n" +
" IJ ij = new K();\n" +
" try { ij.m(); } catch(E11 e) {}\n" +
" }\n" +
"}\n" +
"interface I { void m() throws E1; }\n" +
"interface J { void m() throws E11; }\n" +
"interface IJ extends I, J {}\n" +
"class K implements IJ { public void m() {} }\n" +
"class E1 extends Exception { static final long serialVersionUID = 1; }\n" +
"class E11 extends E1 { static final long serialVersionUID = 2; }\n" +
"class E2 extends Exception { static final long serialVersionUID = 3; }"
},
""
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=79798
public void _test016() {
this.runConformTest(
new String[] {
"E.java",
"public class E {\n" +
" public static void main(String[] s) {\n" +
" IJ ij = new K();\n" +
" try { ij.m(); } catch(E11 e) {}\n" +
" }\n" +
"}\n" +
"interface I { void m() throws E1; }\n" +
"interface J { void m() throws E2, E11; }\n" +
"interface IJ extends I, J {}\n" +
"class K implements IJ { public void m() {} }\n" +
"class E1 extends Exception { static final long serialVersionUID = 1; }\n" +
"class E11 extends E1 { static final long serialVersionUID = 2; }\n" +
"class E2 extends Exception { static final long serialVersionUID = 3; }"
},
""
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=79798
public void _test016a() {
this.runNegativeTest(
new String[] {
"E.java",
"public class E {\n" +
" public static void main(String[] s) {\n" +
" IJ ij = new K();\n" +
" ij.m();\n" +
" try { ij.m(); } catch(E2 e) {}\n" +
" }\n" +
"}\n" +
"interface I { void m() throws E1; }\n" +
"interface J { void m() throws E2, E11; }\n" +
"interface IJ extends I, J {}\n" +
"class K implements IJ { public void m() {} }\n" +
"class E1 extends Exception { static final long serialVersionUID = 1; }\n" +
"class E11 extends E1 { static final long serialVersionUID = 2; }\n" +
"class E2 extends Exception { static final long serialVersionUID = 3; }"
},
"----------\n" +
"1. ERROR in E.java (at line 4)\r\n" +
" ij.m();\r\n" +
" ^^^^^^\n" +
"Unhandled exception type E11\n" +
"----------\n" +
"2. ERROR in E.java (at line 5)\r\n" +
" try { ij.m(); } catch(E2 e) {}\r\n" +
" ^^^^^^\n" +
"Unhandled exception type E11\n" +
"----------\n" +
"3. ERROR in E.java (at line 5)\r\n" +
" try { ij.m(); } catch(E2 e) {}\r\n" +
" ^^\n" +
"Unreachable catch block for E2. This exception is never thrown from the try statement body\n" +
"----------\n"
// 4: unreported exception E11; must be caught or declared to be thrown
// 5: exception E2 is never thrown in body of corresponding try statement
// 5: unreported exception E11; must be caught or declared to be thrown
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=149893
public void test017() {
this.runConformTest(
new String[] {
"AbstractFilter.java",
"import java.util.*;\n" +
"public class AbstractFilter<T> implements IFilter<T> {\n" +
" public final <E extends T> boolean selekt(E obj) { return true; }\n" +
" public final <E extends T> List<E> filter(List<E> elements) {\n" +
" if ((elements == null) || (elements.size() == 0)) return elements;\n" +
" List<E> okElements = new ArrayList<E>(elements.size());\n" +
" for (E obj : elements) {\n" +
" if (selekt(obj)) okElements.add(obj);\n" +
" }\n" +
" return okElements;" +
" }\n" +
"}\n" +
"interface IFilter<T> {\n" +
" <E extends T> boolean selekt(E obj);\n" +
" <E extends T> List<E> filter(List<E> elements);\n" +
"}"
},
""
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=147647
public void test018() {
if (this.complianceLevel >= ClassFileConstants.JDK1_7)
return;
this.runConformTest(
new String[] {
"Y.java",
"class X<T extends Object> {\n" +
" public static <U extends Object> X<U> make(Class<U> clazz) {\n" +
" System.out.print(false);\n" +
" return new X<U>();\n" +
" }\n" +
"}\n" +
"public class Y<V extends String> extends X<V> {\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" System.out.print(true);\n" +
" return new Y<W>();\n" +
" }\n" +
" public static void main(String[] args) throws Exception {\n" +
" Y.make(String.class);\n" +
" }\n" +
"}"
},
"true");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=147647
// in fact, <W extends String> Y<W> make(Class<W> clazz) is the most
// specific method according to JLS 15.12.2.5
public void test019() {
if (this.complianceLevel >= ClassFileConstants.JDK1_7)
return;
this.runConformTest(
new String[] {
"Y.java",
"class X<T extends Object> {\n" +
" public static <U extends Object> X<U> make(Class<U> clazz) {\n" +
" System.out.print(false);\n" +
" return new X<U>();\n" +
" }\n" +
"}\n" +
"public class Y<V extends String> extends X<V> {\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" System.out.print(true);\n" +
" return new Y<W>();\n" +
" }\n" +
" public static void main(String[] args) throws Exception {\n" +
" Y.make(getClazz());\n" +
" }\n" +
" public static Class getClazz() {\n" +
" return String.class;\n" +
" }\n" +
"}"
},
"true");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=147647
public void test020() {
if (this.complianceLevel >= ClassFileConstants.JDK1_7)
return;
this.runConformTest(
new String[] {
"Y.java",
"class X<T extends Object> {\n" +
" public static <U extends Object> X<U> make(Class<U> clazz) {\n" +
" System.out.print(true);\n" +
" return new X<U>();\n" +
" }\n" +
"}\n" +
"public class Y<V extends String> extends X<V> {\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" System.out.print(false);\n" +
" return new Y<W>();\n" +
" }\n" +
" public static void main(String[] args) throws Exception {\n" +
" Y.make(getClazz().newInstance().getClass());\n" +
" }\n" +
" public static Class getClazz() {\n" +
" return String.class;\n" +
" }\n" +
"}"
},
"true");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=147647
// variant: having both methods in the same class should not change anything
public void test021() {
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6182950
String expectedCompilerLog = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. WARNING in Y.java (at line 3)\n" +
" public class Y<V extends String> extends X<V> {\n" +
" ^^^^^^\n" +
"The type parameter V should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"2. WARNING in Y.java (at line 4)\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^\n" +
"The type parameter W should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"3. WARNING in Y.java (at line 4)\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<W>) is the same as another method in type Y<V>\n" +
"----------\n" +
"4. WARNING in Y.java (at line 8)\n" +
" public static <U extends Object> X<U> make(Class<U> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<U>) is the same as another method in type Y<V>\n" +
"----------\n" +
"5. WARNING in Y.java (at line 13)\n" +
" Y.make(getClazz());\n" +
" ^^^^^^^^^^^^^^^^^^\n" +
"Type safety: Unchecked invocation make(Class) of the generic method make(Class<W>) of type Y\n" +
"----------\n" +
"6. WARNING in Y.java (at line 13)\n" +
" Y.make(getClazz());\n" +
" ^^^^^^^^^^\n" +
"Type safety: The expression of type Class needs unchecked conversion to conform to Class<String>\n" +
"----------\n" +
"7. WARNING in Y.java (at line 15)\n" +
" public static Class getClazz() {\n" +
" ^^^^^\n" +
"Class is a raw type. References to generic type Class<T> should be parameterized\n" +
"----------\n":
"----------\n" +
"1. WARNING in Y.java (at line 3)\n" +
" public class Y<V extends String> extends X<V> {\n" +
" ^^^^^^\n" +
"The type parameter V should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"2. WARNING in Y.java (at line 4)\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^\n" +
"The type parameter W should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"3. ERROR in Y.java (at line 4)\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<W>) is the same as another method in type Y<V>\n" +
"----------\n" +
"4. ERROR in Y.java (at line 8)\n" +
" public static <U extends Object> X<U> make(Class<U> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<U>) is the same as another method in type Y<V>\n" +
"----------\n" +
"5. WARNING in Y.java (at line 13)\n" +
" Y.make(getClazz());\n" +
" ^^^^^^^^^^^^^^^^^^\n" +
"Type safety: Unchecked invocation make(Class) of the generic method make(Class<W>) of type Y\n" +
"----------\n" +
"6. WARNING in Y.java (at line 13)\n" +
" Y.make(getClazz());\n" +
" ^^^^^^^^^^\n" +
"Type safety: The expression of type Class needs unchecked conversion to conform to Class<String>\n" +
"----------\n" +
"7. WARNING in Y.java (at line 15)\n" +
" public static Class getClazz() {\n" +
" ^^^^^\n" +
"Class is a raw type. References to generic type Class<T> should be parameterized\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"Y.java",
"class X<T extends Object> {\n" +
"}\n" +
"public class Y<V extends String> extends X<V> {\n" +
" public static <W extends String> Y<W> make(Class<W> clazz) {\n" +
" System.out.print(true);\n" +
" return new Y<W>();\n" +
" }\n" +
" public static <U extends Object> X<U> make(Class<U> clazz) {\n" +
" System.out.print(false);\n" +
" return new X<U>();\n" +
" }\n" +
" public static void main(String[] args) throws Exception {\n" +
" Y.make(getClazz());\n" +
" }\n" +
" public static Class getClazz() {\n" +
" return String.class;\n" +
" }\n" +
"}"
},
expectedCompilerLog
);
/* javac 7
X.java:8: name clash: <U>make(Class<U>) and <W>make(Class<W>) have the same erasure
public static <U extends Object> X<U> make(Class<U> clazz) {
^
where U,W are type-variables:
U extends Object declared in method <U>make(Class<U>)
W extends String declared in method <W>make(Class<W>)
X.java:13: warning: [unchecked] unchecked conversion
Y.make(getClazz());
^
required: Class<W#1>
found: Class
where W#1,W#2 are type-variables:
W#1 extends String declared in method <W#2>make(Class<W#2>)
W#2 extends String declared in method <W#2>make(Class<W#2>)
X.java:13: warning: [unchecked] unchecked method invocation: method make in class Y is applied to given types
Y.make(getClazz());
^
required: Class<W>
found: Class
where W is a type-variable:
W extends String declared in method <W>make(Class<W>)
1 error
2 warnings
*/
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=147647
// variant: using instances triggers raw methods, which are ambiguous
public void test022() {
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6182950
String expectedCompilerLog = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. WARNING in X.java (at line 3)\n" +
" class Y<V extends String> extends X<V> {\n" +
" ^^^^^^\n" +
"The type parameter V should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"2. WARNING in X.java (at line 4)\n" +
" public <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^\n" +
"The type parameter W should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"3. WARNING in X.java (at line 4)\n" +
" public <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<W>) is the same as another method in type Y<V>\n" +
"----------\n" +
"4. WARNING in X.java (at line 7)\n" +
" public <U extends Object> X<U> make(Class<U> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<U>) is the same as another method in type Y<V>\n" +
"----------\n" +
"5. WARNING in X.java (at line 11)\n" +
" Y y = new Y();\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"6. WARNING in X.java (at line 11)\n" +
" Y y = new Y();\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"7. ERROR in X.java (at line 12)\n" +
" y.make(String.class);\n" +
" ^^^^\n" +
"The method make(Class) is ambiguous for the type Y\n" +
"----------\n" +
"8. ERROR in X.java (at line 13)\n" +
" y.make(getClazz());\n" +
" ^^^^\n" +
"The method make(Class) is ambiguous for the type Y\n" +
"----------\n" +
"9. ERROR in X.java (at line 14)\n" +
" y.make(getClazz().newInstance().getClass());\n" +
" ^^^^\n" +
"The method make(Class) is ambiguous for the type Y\n" +
"----------\n" +
"10. WARNING in X.java (at line 16)\n" +
" public static Class getClazz() {\n" +
" ^^^^^\n" +
"Class is a raw type. References to generic type Class<T> should be parameterized\n" +
"----------\n":
"----------\n" +
"1. WARNING in X.java (at line 3)\n" +
" class Y<V extends String> extends X<V> {\n" +
" ^^^^^^\n" +
"The type parameter V should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"2. WARNING in X.java (at line 4)\n" +
" public <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^\n" +
"The type parameter W should not be bounded by the final type String. Final types cannot be further extended\n" +
"----------\n" +
"3. ERROR in X.java (at line 4)\n" +
" public <W extends String> Y<W> make(Class<W> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<W>) is the same as another method in type Y<V>\n" +
"----------\n" +
"4. ERROR in X.java (at line 7)\n" +
" public <U extends Object> X<U> make(Class<U> clazz) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Erasure of method make(Class<U>) is the same as another method in type Y<V>\n" +
"----------\n" +
"5. WARNING in X.java (at line 11)\n" +
" Y y = new Y();\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"6. WARNING in X.java (at line 11)\n" +
" Y y = new Y();\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"7. WARNING in X.java (at line 12)\n" +
" y.make(String.class);\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The method make(Class) belongs to the raw type Y. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"8. WARNING in X.java (at line 13)\n" +
" y.make(getClazz());\n" +
" ^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The method make(Class) belongs to the raw type Y. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"9. WARNING in X.java (at line 14)\n" +
" y.make(getClazz().newInstance().getClass());\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The method make(Class) belongs to the raw type Y. References to generic type Y<V> should be parameterized\n" +
"----------\n" +
"10. WARNING in X.java (at line 16)\n" +
" public static Class getClazz() {\n" +
" ^^^^^\n" +
"Class is a raw type. References to generic type Class<T> should be parameterized\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T extends Object> {\n" +
"}\n" +
"class Y<V extends String> extends X<V> {\n" +
" public <W extends String> Y<W> make(Class<W> clazz) {\n" +
" return new Y<W>();\n" +
" }\n" +
" public <U extends Object> X<U> make(Class<U> clazz) {\n" +
" return new X<U>();\n" +
" }\n" +
" public static void main(String[] args) throws Exception {\n" +
" Y y = new Y();\n" +
" y.make(String.class);\n" +
" y.make(getClazz());\n" +
" y.make(getClazz().newInstance().getClass());\n" +
" }\n" +
" public static Class getClazz() {\n" +
" return String.class;\n" +
" }\n" +
"}"
},
expectedCompilerLog
);
/* javac 7
X.java:7: name clash: <U>make(Class<U>) and <W>make(Class<W>) have the same erasure
public <U extends Object> X<U> make(Class<U> clazz) {
^
where U,W are type-variables:
U extends Object declared in method <U>make(Class<U>)
W extends String declared in method <W>make(Class<W>)
X.java:12: warning: [unchecked] unchecked call to <W>make(Class<W>) as a member of the raw type Y
y.make(String.class);
^
where W is a type-variable:
W extends String declared in method <W>make(Class<W>)
X.java:13: warning: [unchecked] unchecked call to <W>make(Class<W>) as a member of the raw type Y
y.make(getClazz());
^
where W is a type-variable:
W extends String declared in method <W>make(Class<W>)
X.java:14: warning: [unchecked] unchecked call to <W>make(Class<W>) as a member of the raw type Y
y.make(getClazz().newInstance().getClass());
^
where W is a type-variable:
W extends String declared in method <W>make(Class<W>)
1 error
3 warnings
*/
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=159711
public void test023() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" public static void staticFoo(Collection<?> p) {\n" +
" System.out.print(1);\n" +
" }\n" +
" public static <T extends List<?>> void staticFoo(T p) {\n" +
" System.out.print(2);\n" +
" }\n" +
" public void foo(Collection<?> p) {\n" +
" System.out.print(1);\n" +
" }\n" +
" public <T extends List<?>> void foo(T p) {\n" +
" System.out.print(2);\n" +
" }\n" +
" public void foo2(Collection<?> p) {\n" +
" System.out.print(1);\n" +
" }\n" +
" public void foo2(List<?> p) {\n" +
" System.out.print(2);\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" staticFoo(new ArrayList<String>(Arrays.asList(\"\")));\n" +
" new X().foo(new ArrayList<String>(Arrays.asList(\"\")));\n" +
" new X().foo2(new ArrayList<String>(Arrays.asList(\"\")));\n" +
" }\n" +
"}"
},
"222");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=159711
// self contained variant
public void test024() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void foo(L1<?> p) {\n" +
" System.out.println(1);\n" +
" }\n" +
" public static <T extends L2<?>> void foo(T p) {\n" +
" System.out.println(2);\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" foo(new L3<String>());\n" +
" }\n" +
"}",
"L1.java",
"public interface L1<T> {\n" +
"}",
"L2.java",
"public interface L2<T> extends L1<T> {\n" +
"}",
"L3.java",
"public class L3<T> implements L2<T> {\n" +
" public L3() {\n" +
" }\n" +
"}",
},
"2");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162026
public void test025() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" J m = new Y();\n" +
" void foo() {\n" +
" m.foo(1.0f);\n" +
" }\n" +
"}",
"I.java",
"public interface I {\n" +
" <T extends Number> T foo(final Number p);\n" +
"}",
"J.java",
"public interface J extends I {\n" +
" Float foo(final Number p);\n" +
"}",
"Y.java",
"public class Y implements J {\n" +
" public Float foo(final Number p){\n" +
" return null;\n" +
" }\n" +
"}",
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162026
// variant
public void test026() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void foo() {\n" +
" (new Y()).foo(1.0f);\n" +
" }\n" +
"}",
"I.java",
"public interface I {\n" +
" <T extends Number> T foo(final Number p);\n" +
"}",
"J.java",
"public interface J extends I {\n" +
" Float foo(final Number p);\n" +
"}",
"Y.java",
"public class Y implements J {\n" +
" public Float foo(final Number p){\n" +
" return null;" +
" }\n" +
"}",
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162026
// variant
public void test027() {
this.runNegativeTest(
new String[] {
"J.java",
"public interface J {\n" +
" <T extends Number> T foo(final Number p);\n" +
" Float foo(final Number p);\n" +
"}",
},
"----------\n" +
"1. ERROR in J.java (at line 2)\n" +
" <T extends Number> T foo(final Number p);\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Duplicate method foo(Number) in type J\n" +
"----------\n" +
"2. ERROR in J.java (at line 3)\n" +
" Float foo(final Number p);\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Duplicate method foo(Number) in type J\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
public void test028() {
this.runConformTest(
new String[] { /* test files */
"X.java",
"interface Irrelevant {}\n" +
"interface I {\n" +
" Object foo(Number n);\n" +
"}\n" +
"interface J extends Irrelevant, I {\n" +
" String foo(Number n);\n" +
"}\n" +
"interface K {\n" +
" Object foo(Number n);\n" +
"}\n" +
"public abstract class X implements J, K {\n" +
" void foo() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}"
},
JavacTestOptions.JavacHasABug.JavacBug6294779 /* javac test options */);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - simplified
public void test029() {
this.runConformTest(
new String[] { /* test files */
"X.java",
"interface J {\n" +
" String foo(Number n);\n" +
"}\n" +
"interface K {\n" +
" Object foo(Number n);\n" +
"}\n" +
"public abstract class X implements J, K {\n" +
" void foo() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}"
},
JavacTestOptions.JavacHasABug.JavacBug6294779 /* javac test options */);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - same return type
public void test030() {
this.runConformTest(
new String[] {
"X.java",
"interface J {\n" +
" Object foo(Number n);\n" +
"}\n" +
"interface K {\n" +
" Object foo(Number n);\n" +
"}\n" +
"public abstract class X implements J, K {\n" +
" void foo() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant
public void test031() {
this.runConformTest(
new String[] { /* test files */
"X.java",
"interface Irrelevant {}\n" +
"interface I {\n" +
" Object foo(Number n);\n" +
"}\n" +
"interface J extends Irrelevant, I {\n" +
" String foo(Number n);\n" +
"}\n" +
"interface K {\n" +
" Object foo(Number n);\n" +
"}\n" +
"public abstract class X implements Irrelevant, I, J, K {\n" +
" void foo() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}"
},
JavacTestOptions.JavacHasABug.JavacBug6294779 /* javac test options */);
}
// tests 32-34 were moved to MethodVerifyTest 134-140
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - the inheriting class implements foo
public void test035() {
this.runConformTest(
new String[] {
"X.java",
"interface I {\n" +
" Object foo(Number n);\n" +
"}\n" +
"abstract class J {\n" +
" abstract String foo(Number n);\n" +
"}\n" +
"public class X extends J implements I {\n" +
" void bar() {\n" +
" foo(0.0f);\n" + // calls X#foo(Number)
" }\n" +
" public String foo(Number n) {\n" +
" return null;\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - extending instead of implementing
public void test037() {
this.runConformTest(
// test directory preparation
new String[] { /* test files */
"X.java",
"interface I {\n" +
" Object foo(Number n);\n" +
"}\n" +
"abstract class J {\n" +
" abstract String foo(Number n);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}"
},
// javac options
JavacTestOptions.JavacHasABug.JavacBug6294779 /* javac test options */);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - no promotion of parameter from float to Number
public void test038() {
this.runConformTest(
new String[] { /* test files */
"X.java",
"interface I {\n" +
" Object foo(float f);\n" +
"}\n" +
"abstract class J {\n" +
" public abstract String foo(float f);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}"
},
JavacTestOptions.JavacHasABug.JavacBug6294779 /* javac test options */);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - an explicit cast solves the issue
public void test039() {
this.runConformTest(
new String[] {
"X.java",
"interface I {\n" +
" Object foo(float f);\n" +
"}\n" +
"abstract class J {\n" +
" public abstract String foo(float f);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" String s = ((J) this).foo(0.0f);\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - an explicit cast solves the issue
public void test040() {
this.runConformTest(
new String[] {
"X.java",
"interface I {\n" +
" Object foo(float f);\n" +
"}\n" +
"abstract class J {\n" +
" public abstract String foo(float f);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" Object o = ((I) this).foo(0.0f);\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - connecting return types
public void test041() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I {\n" +
" Object foo(float f);\n" +
"}\n" +
"abstract class J {\n" +
" public abstract String foo(float f);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" String s = ((I) this).foo(0.0f);\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" String s = ((I) this).foo(0.0f);\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Type mismatch: cannot convert from Object to String\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - a further inheriting class implements String foo
public void test042() {
this.runConformTest(
// test directory preparation
new String[] { /* test files */
"X.java",
"interface I {\n" +
" Object foo(float f);\n" +
"}\n" +
"abstract class J {\n" +
" public abstract String foo(float f);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}\n" +
"class Z extends X {\n" +
" @Override" +
" public String foo(float f) {\n" +
" return null;\n" +
" }\n" +
"}"
},
// javac options
JavacTestOptions.JavacHasABug.JavacBug6294779 /* javac test options */);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=162065
// variant - a further inheriting class implements Object foo
public void test043() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I {\n" +
" Object foo(float f);\n" +
"}\n" +
"abstract class J {\n" +
" public abstract String foo(float f);\n" +
"}\n" +
"public abstract class X extends J implements I {\n" +
" void bar() {\n" +
" foo(0.0f);\n" +
" }\n" +
"}\n" +
"class Z extends X {\n" +
" @Override\n" +
" public Object foo(float f) {\n" + // cannot override String foo
" return null;\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 14)\n" +
" public Object foo(float f) {\n" +
" ^^^^^^\n" +
"The return type is incompatible with J.foo(float)\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=163370
public void test044() {
this.runConformTest(
new String[] {
"X.java",
"interface I<E> {}\n" +
"class Y<E> {}\n" +
"public class X<E extends Y<E>> implements I<E> {\n" +
" public static <E extends Y<E>> X<E> bar(X<E> s) {\n" +
" return null;\n" +
" }\n" +
" public static <E extends Y<E>> X<E> bar(I<E> c) {\n" +
" return null;\n" +
" }\n" +
" public static <E extends Y<E>> X<E> foo(X<E> s) {\n" +
" X<E> result = bar(s);\n" +
" return result;\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=165620
public void test045() {
this.runConformTest(
new String[] {
"X.java",
"abstract class Y<T> implements I<T> {\n" +
"}\n" +
"interface I<T> { \n" +
"}\n" +
"interface J<T> {\n" +
"}\n" +
"class X {\n" +
" public static <V extends J<? super V>> V foo(final I<V> a)\n" +
" {\n" +
" return null;\n" +
" }\n" +
" public static <V extends J<? super V>> V foo(final Y<V> a)\n" +
" {\n" +
" return null;\n" +
" }\n" +
" public static <V extends J<? super V>> void test(final Y<V> a)\n" +
" {\n" +
" foo(a);\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=163370
// variant
public void test046() {
this.runConformTest(
new String[] {
"X.java",
"abstract class Y<T, U> implements I<T, U> {\n" +
"}\n" +
"interface I<T, U> { \n" +
"}\n" +
"interface J<T, U> {\n" +
"}\n" +
"class X {\n" +
" public static <V extends J<V, W>, W extends J<V, W>> V foo(final I<V, W> a)\n" +
" {\n" +
" return null;\n" +
" }\n" +
" public static <V extends J<V, W>, W extends J<V, W>> V foo(final Y<V, W> a)\n" +
" {\n" +
" return null;\n" +
" }\n" +
" public static <V extends J<V, W>, W extends J<V, W>> void test(final Y<V, W> a)\n" +
" {\n" +
" foo(a);\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=163590
public void test047() {
this.runNegativeTest(
// test directory preparation
new String[] { /* test files */
"X.java",
"public class X<T extends I & J> {\n" +
" void foo(T t) {\n" +
" }\n" +
"}\n" +
"interface I {\n" +
" public int method();\n" +
"}\n" +
"interface J {\n" +
" public boolean method();\n" +
"}\n"
},
// compiler results
"----------\n" + /* expected compiler log */
"1. ERROR in X.java (at line 1)\n" +
" public class X<T extends I & J> {\n" +
" ^\n" +
"The return types are incompatible for the inherited methods I.method(), J.method()\n" +
"----------\n",
// javac options
JavacTestOptions.JavacHasABug.JavacBug5061359 /* javac test options */);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=163590
// Variant: javac complains as well if we attempt to use method, but noone
// complains upon bar or CONSTANT.
public void test048() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T extends I & J> {\n" +
" void foo(T t) {\n" +
" t.method();\n" +
" t.bar();\n" +
" if (t.CONSTANT > 0);\n" +
" }\n" +
"}\n" +
"interface I {\n" +
" public int method();\n" +
" void bar();\n" +
"}\n" +
"interface J {\n" +
" public boolean method();\n" +
" static final int CONSTANT = 0;\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 1)\n" +
" public class X<T extends I & J> {\n" +
" ^\n" +
"The return types are incompatible for the inherited methods I.method(), J.method()\n" +
"----------\n" +
"2. ERROR in X.java (at line 3)\n" +
" t.method();\n" +
" ^^^^^^\n" +
"The method method() is ambiguous for the type T\n" +
"----------\n" +
"3. WARNING in X.java (at line 5)\n" +
" if (t.CONSTANT > 0);\n" +
" ^^^^^^^^\n" +
"The static field J.CONSTANT should be accessed in a static way\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=163590
// can't implement both interfaces though
public void test049() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I {\n" +
" public int method();\n" +
"}\n" +
"interface J {\n" +
" public boolean method();\n" +
"}\n" +
"class X implements I, J {\n" +
" public int method() {\n" +
" return 0;\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" public int method() {\n" +
" ^^^\n" +
"The return type is incompatible with J.method()\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=163590
// variant: secure the legal case
public void test050() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T extends I & J> {\n" +
" void foo(T t) {\n" +
" }\n" +
"}\n" +
"interface I {\n" +
" public int method();\n" +
"}\n" +
"interface J {\n" +
" public int method();\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=166355
public void test051() {
this.runNegativeTest(
new String[] { /* test files */
"X.java",
"interface I<T> {\n" +
"}\n" +
"class Y {\n" +
" void bar(I<?> x) {\n" +
" }\n" +
"}\n" +
"public class X extends Y {\n" +
" void foo() {\n" +
" bar(new Z());\n" +
" }\n" +
" void bar(Z x) {\n" +
" }\n" +
" private static final class Z implements I {\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" bar(new Z());\n" +
" ^^^\n" +
"The method bar(X.Z) is ambiguous for the type X\n" +
"----------\n" +
"2. WARNING in X.java (at line 13)\n" +
" private static final class Z implements I {\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=166355
// variant
public void test052() {
this.runConformTest(
new String[] {
"X.java",
"interface I<T> {\n" +
"}\n" +
"class Y {\n" +
" void bar(I<?> x) {\n" +
" }\n" +
"}\n" +
"public class X extends Y {\n" +
" void foo() {\n" +
" bar(new Z());\n" +
" }\n" +
" void bar(Z x) {\n" +
" }\n" +
" private static final class Z implements I<String> {\n" +
" }\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=166355
// variant
public void test053() {
this.runNegativeTest(
new String[] { /* test files */
"X.java",
"interface I<T> {\n" +
"}\n" +
"class Y {\n" +
" void bar(I<?> x) {\n" +
" }\n" +
"}\n" +
"public class X extends Y {\n" +
" void foo() {\n" +
" bar(new Z(){});\n" +
" }\n" +
" void bar(Z x) {\n" +
" }\n" +
" private static class Z implements I {\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" bar(new Z(){});\n" +
" ^^^\n" +
"The method bar(X.Z) is ambiguous for the type X\n" +
"----------\n" +
"2. WARNING in X.java (at line 13)\n" +
" private static class Z implements I {\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=166355
// variant
public void test054() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void bar(Z x) {\n" +
" System.out.println(\"bar(Z)\");\n" +
" }\n" +
" void bar(I<?> x) {\n" +
" System.out.println(\"bar(I)\");\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" (new X()).bar(new Z());\n" +
" }\n" +
"}\n" +
"interface I<T> {}\n" +
"class Z implements I<Object> {}"
},
"bar(Z)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=166355
// variant
public void _test055() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I<T> {}\n" +
"class X {\n" +
" void bar(Z x) {\n" +
" System.out.println(\"bar(Z)\");\n" +
" }\n" +
" void bar(I<?> x) {\n" +
" System.out.println(\"bar(I)\");\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" (new X()).bar(new Z());\n" +
" }\n" +
"}\n" +
"class Z implements I {}"
},
"ERR");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=184190
public void test056() {
if (this.complianceLevel >= ClassFileConstants.JDK1_7)
return;
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" void bar(X x) {\n" +
" ZA z = ZA.foo(x);\n" +
" z.toString();\n" +
" }\n" +
"}\n" +
"class Y<T> {\n" +
" public static <U> Y<U> foo(X<U> x) {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class YA<T extends A> extends Y<T> {\n" +
" public static <U extends A> YA<U> foo(X<U> x) {\n" +
" return (YA<U>) Y.foo(x);\n" +
" }\n" +
"}\n" +
"class ZA<T extends B> extends YA<T> {\n" +
" public static <U extends B> ZA<U> foo(X<U> x) {\n" +
" return (ZA<U>) Y.foo(x);\n" +
" }\n" +
"}\n" +
"abstract class A {\n" +
"}\n" +
"abstract class B extends A {\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=186382
public void test057() {
this.runConformTest(
new String[] {
"X.java",
"public class X extends Y {\n" +
" @Override <T4, G4 extends I<T4>> T4 foo(G4 g) { return super.foo(g); }\n" +
"}\n" +
"class Y extends Z {\n" +
" @Override <T3, G3 extends I<T3>> T3 foo(G3 g) { return super.foo(g); }\n" +
"}\n" +
"class Z {\n" +
" <T2, G2 extends I<T2>> T2 foo(G2 g) { return null; }\n" +
"}\n" +
"interface I<T1> {}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=188741
public void test058() {
this.runConformTest(
new String[] {
"X.java",
"public class X extends A {\n" +
" void x(G g) { System.out.print(1); }\n" +
" void x(G g, G g2) { System.out.print(1); }\n" +
" public static void main(String[] s) {\n" +
" H h = new H();\n" +
" new X().x(h);\n" +
" new X().x(h, h);\n" +
" }\n" +
"}\n" +
"class A<T> {\n" +
" void x(T t) { System.out.print(2); }\n" +
" <U> void x(T t, U u) { System.out.print(2); }\n" +
"}\n" +
"class F<T> {}\n" +
"class G<T> extends F<T> {}\n" +
"class H<T> extends G<T> {}"
},
"11");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=188741
public void test058a() {
this.runConformTest(
new String[] {
"X.java",
"public class X extends java.util.ArrayList {\n" +
" private static final long serialVersionUID = 1L;\n" +
" public void add(Comparable o) {}\n" +
" public void test() { add(\"hello\"); }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=188960
public void test059() {
this.runNegativeTest(
new String[] {
"X.java",
"class X<T> {\n" +
" X() {}\n" +
" X(String s) {}\n" +
" X(T t) {}\n" +
" void foo(String s) {}\n" +
" void foo(T t) {}\n" +
"}\n" +
"class NoErrorSubclass extends X<String> {}\n" +
"class StringOnlySubClass extends X<String> {\n" +
" StringOnlySubClass(String s) { super(s); }\n" +
" @Override void foo(String s) { super.foo(s); }\n" +
"}\n" +
"class Test {\n" +
" Object o = new X<String>(\"xyz\");\n" +
" void test(X<String> x) { x.foo(\"xyz\"); }\n" +
"}"
},
// no error is reported against duplicate constructors - but the call is reported as ambiguous
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" class NoErrorSubclass extends X<String> {}\n" +
" ^^^^^^^^^^^^^^^\n" +
"Duplicate methods named foo with the parameters (T) and (String) are defined by the type X<String>\n" +
"----------\n" +
"2. ERROR in X.java (at line 10)\n" +
" StringOnlySubClass(String s) { super(s); }\n" +
" ^^^^^^^^^\n" +
"The constructor X<String>(String) is ambiguous\n" +
"----------\n" +
"3. ERROR in X.java (at line 11)\n" +
" @Override void foo(String s) { super.foo(s); }\n" +
" ^^^\n" +
"The method foo(String) is ambiguous for the type X<String>\n" +
"----------\n" +
"4. ERROR in X.java (at line 14)\n" +
" Object o = new X<String>(\"xyz\");\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"The constructor X<String>(String) is ambiguous\n" +
"----------\n" +
"5. ERROR in X.java (at line 15)\n" +
" void test(X<String> x) { x.foo(\"xyz\"); }\n" +
" ^^^\n" +
"The method foo(String) is ambiguous for the type X<String>\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=191029
public void test059a() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.TreeMap;\n" +
"class X {\n" +
" void test(TreeMap<String, Object> tm) {\n" +
" TreeMap copy = new TreeMap(tm);\n" +
" }\n" +
"}"
},
"----------\n" +
"1. WARNING in X.java (at line 4)\n" +
" TreeMap copy = new TreeMap(tm);\n" +
" ^^^^^^^\n" +
"TreeMap is a raw type. References to generic type TreeMap<K,V> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 4)\n" +
" TreeMap copy = new TreeMap(tm);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Type safety: The constructor TreeMap(SortedMap) belongs to the raw type TreeMap. References to generic type TreeMap<K,V> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 4)\n" +
" TreeMap copy = new TreeMap(tm);\n" +
" ^^^^^^^\n" +
"TreeMap is a raw type. References to generic type TreeMap<K,V> should be parameterized\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=189933
public void test060() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public void bar(K<T, Object> p) {\n" +
" new Y(p);\n" +
" new Y((J<T, Object>) p);\n" +
" new Y((I<T, Object>) p);\n" +
" }\n" +
"}\n" +
"class Y<T, U> {\n" +
" Y(I<? extends T, ? extends U> p) {}\n" +
" Y(J<T, ? extends U> p) {}\n" +
"}\n" +
"interface I<T, U> {}\n" +
"interface J<T, U> extends I<T, U> {}\n" +
"interface K<T, U> extends I<T, U>, J<T, U> {}"
},
""
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=189933
// variant
public void test061() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public void bar(K<T, Object> p) {\n" +
" new Y(p);\n" +
" new Y((J<T, Object>) p);\n" +
" new Y((I<T, Object>) p);\n" +
" }\n" +
"}\n" +
"class Y<T, U> {\n" +
" Y(I<? extends T, ? extends U> p) {}\n" +
" Y(J<T, ? extends U> p) {}\n" +
"}\n" +
"interface I<T, U> {}\n" +
"interface J<T, U> {}\n" +
"interface K<T, U> extends I<T, U>, J<T, U> {}"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" new Y(p);\n" +
" ^^^^^^^^\n" +
"The constructor Y(I) is ambiguous\n" +
"----------\n" +
"2. WARNING in X.java (at line 3)\n" +
" new Y(p);\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<T,U> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 4)\n" +
" new Y((J<T, Object>) p);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The constructor Y(J) belongs to the raw type Y. References to generic type Y<T,U> should be parameterized\n" +
"----------\n" +
"4. WARNING in X.java (at line 4)\n" +
" new Y((J<T, Object>) p);\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<T,U> should be parameterized\n" +
"----------\n" +
"5. WARNING in X.java (at line 5)\n" +
" new Y((I<T, Object>) p);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The constructor Y(I) belongs to the raw type Y. References to generic type Y<T,U> should be parameterized\n" +
"----------\n" +
"6. WARNING in X.java (at line 5)\n" +
" new Y((I<T, Object>) p);\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<T,U> should be parameterized\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=193265
public void test062() {
this.runConformTest(
new String[] {
"X.java",
"enum E implements I {\n" +
" F;\n" +
"}\n" +
"interface I {}\n" +
"interface Spec {\n" +
" <T1 extends Enum<T1> & I> void method(T1 t);\n" +
"}\n" +
"abstract class X implements Spec {\n" +
" public <T2 extends Enum<T2> & I> void method(T2 t) {}\n" +
" void test() { method(E.F); }\n" +
"}"
},
""
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=196254
public void test063() {
this.runConformTest(
new String[] {
"Test.java",
"interface I<R> {}\n" +
"class X<T extends I> {\n" +
" void method(X<?> that) {}\n" +
"}\n" +
"class Y<T extends I> extends X<T> {\n" +
" @Override void method(X<? extends I> that) { System.out.print(1); }\n" +
"}\n" +
"public class Test {\n" +
" public static void main(String[] args) { new Y().method((X) null); }\n" +
"}"
},
"1"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=198120
public void test064() {
this.runConformTest(
new String[] {
"A.java",
"interface I<E> {\n" +
" void x(I<? extends E> i);\n" +
"}\n" +
"public abstract class A implements I {\n" +
" public void x(I i) {}\n" +
"}\n" +
"class B extends A {\n" +
" void y(A a) { super.x(a); }\n" +
"}"
},
""
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=200547
public void test065() {
this.runConformTest(
new String[] {
"A.java",
"public abstract class A {\n" +
" abstract <T extends Number & Comparable<T>> void m(T x);\n" +
"}\n" +
"class B extends A {\n" +
" @Override <T extends Number & Comparable<T>> void m(T x) {}\n" +
"}"
},
""
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=214558
public void test066() {
this.runNegativeTest(
new String[] {
"A.java",
"import java.util.*;\n" +
"public class A {\n" +
" void foo(Collection<Object[]> c) {}\n" +
" void foo(Collection<Object[]> c, Object o) {}\n" +
" public static void main(String[] args) {\n" +
" new B().foo(new ArrayList());\n" +
" new B().foo(new ArrayList(), args[0]);\n" +
" }\n" +
"}\n" +
"class B extends A {\n" +
" void foo(ArrayList a) {}\n" +
" void foo(ArrayList a, Object o) {}\n" +
"}"
},
"----------\n" +
"1. ERROR in A.java (at line 6)\n" +
" new B().foo(new ArrayList());\n" +
" ^^^\n" +
"The method foo(ArrayList) is ambiguous for the type B\n" +
"----------\n" +
"2. WARNING in A.java (at line 6)\n" +
" new B().foo(new ArrayList());\n" +
" ^^^^^^^^^\n" +
"ArrayList is a raw type. References to generic type ArrayList<E> should be parameterized\n" +
"----------\n" +
"3. ERROR in A.java (at line 7)\n" +
" new B().foo(new ArrayList(), args[0]);\n" +
" ^^^\n" +
"The method foo(ArrayList, Object) is ambiguous for the type B\n" +
"----------\n" +
"4. WARNING in A.java (at line 7)\n" +
" new B().foo(new ArrayList(), args[0]);\n" +
" ^^^^^^^^^\n" +
"ArrayList is a raw type. References to generic type ArrayList<E> should be parameterized\n" +
"----------\n" +
"5. WARNING in A.java (at line 11)\n" +
" void foo(ArrayList a) {}\n" +
" ^^^^^^^^^\n" +
"ArrayList is a raw type. References to generic type ArrayList<E> should be parameterized\n" +
"----------\n" +
"6. WARNING in A.java (at line 12)\n" +
" void foo(ArrayList a, Object o) {}\n" +
" ^^^^^^^^^\n" +
"ArrayList is a raw type. References to generic type ArrayList<E> should be parameterized\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=214558 - positive case
public void test067() {
this.runConformTest(
new String[] {
"A.java",
"import java.util.*;\n" +
"public class A {\n" +
" void foo(Collection<Object[]> c) {}\n" +
" public static void main(String[] args) {\n" +
" new B().foo(new ArrayList<Object>());\n" +
" }\n" +
"}\n" +
"class B extends A {\n" +
" void foo(ArrayList<Object> a) {System.out.print(1);}\n" +
"}"
},
"1"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=251279
public void test068() {
this.runConformTest(
new String[] {
"X.java",
"interface A { X<? extends A> foo(); }\n" +
"interface B extends A { X<? extends B> foo(); }\n" +
"interface C extends B, A {}\n" +
"interface D extends A, B {}\n" +
"public class X<T> {\n" +
" public void bar() {\n" +
" C c = null;\n" +
" X<? extends B> c_b = c.foo();\n" +
" D d = null;\n" +
" X<? extends B> d_b = d.foo();\n" +
" }\n" +
"}"
},
""
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=251279 - variation
public void test069() {
this.runNegativeTest(
new String[] {
"X.java",
"interface A { X<? extends B> foo(); }\n" +
"interface B extends A { X<? extends A> foo(); }\n" +
"interface C extends B, A {}\n" +
"interface D extends A, B {}\n" +
"public class X<T> {\n" +
" void test(C c, D d) {\n" +
" X<? extends B> c_b = c.foo();\n" +
" X<? extends B> d_b = d.foo();\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" interface B extends A { X<? extends A> foo(); }\n" +
" ^^^^^^^^^^^^^^\n" +
"The return type is incompatible with A.foo()\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=251279 - variation
public void test070() {
this.runNegativeTest(
new String[] {
"X.java",
"interface A { X<? extends A> foo(); }\n" +
"interface B { X<? extends B> foo(); }\n" +
"interface C extends B, A {}\n" +
"interface D extends A, B {}\n" +
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" C c = null;\n" +
" X<? extends B> c_b = c.foo();\n" +
" D d = null;\n" +
" X<? extends B> d_b = d.foo();\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" interface C extends B, A {}\n" +
" ^\n" +
"The return types are incompatible for the inherited methods B.foo(), A.foo()\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" interface D extends A, B {}\n" +
" ^\n" +
"The return types are incompatible for the inherited methods A.foo(), B.foo()\n" +
"----------\n" +
"3. ERROR in X.java (at line 8)\n" +
" X<? extends B> c_b = c.foo();\n" +
" ^^^\n" +
"The method foo() is ambiguous for the type C\n" +
"----------\n" +
"4. ERROR in X.java (at line 10)\n" +
" X<? extends B> d_b = d.foo();\n" +
" ^^^\n" +
"The method foo() is ambiguous for the type D\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=251279 - variation
public void test071() {
this.runConformTest(
new String[] {
"Y.java",
"interface I {\n" +
" Integer a();\n" +
" Float b();\n" +
"}\n" +
"interface J {\n" +
" Integer a();\n" +
" Double c();\n" +
"}\n" +
"abstract class X {\n" +
" public abstract Float b();\n" +
" public Double c() { return null; }\n" +
"}\n" +
"abstract class Y extends X implements I, J {\n" +
" void test() {\n" +
" Integer i = a();\n" +
" Float f = b();\n" +
" Double d = c();\n" +
" }\n" +
"}"
},
""
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=251279 - variation
public void test072() {
this.runConformTest(
new String[] {
"Y.java",
"interface I {\n" +
" Number a();\n" +
" Number b();\n" +
"}\n" +
"interface J {\n" +
" Integer a();\n" +
" Number c();\n" +
"}\n" +
"abstract class X {\n" +
" public abstract Float b();\n" +
" public Double c() { return null; }\n" +
"}\n" +
"abstract class Y extends X implements I, J {\n" +
" void test() {\n" +
" Integer i = a();\n" +
" Float f = b();\n" +
" Double d = c();\n" +
" }\n" +
"}\n" +
"abstract class Y2 extends X implements J, I {\n" +
" void test() {\n" +
" Integer i = a();\n" +
" Float f = b();\n" +
" Double d = c();\n" +
" }\n" +
"}"
},
"" // javac reports 4 ambiguous errors, 2 each of a() & b() even tho the return types are sustitutable
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=251279 - variation
public void test073() {
this.runNegativeTest(
new String[] {
"Y.java",
"interface I {\n" +
" int a();\n" +
" int b();\n" +
"}\n" +
"interface J {\n" +
" byte a();\n" +
" int c();\n" +
"}\n" +
"abstract class X {\n" +
" public abstract byte b();\n" +
" public byte c() { return 1; }\n" +
"}\n" +
"abstract class Y extends X implements I, J {\n" +
" void test() {\n" +
" byte a = a();\n" +
" byte b = b();\n" +
" byte c = c();\n" +
" }\n" +
"}\n" +
"abstract class Y2 extends X implements J, I {\n" +
" void test() {\n" +
" byte a = a();\n" +
" byte b = b();\n" +
" byte c = c();\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in Y.java (at line 13)\n" +
" abstract class Y extends X implements I, J {\n" +
" ^\n" +
"The return types are incompatible for the inherited methods J.c(), X.c()\n" +
"----------\n" +
"2. ERROR in Y.java (at line 13)\n" +
" abstract class Y extends X implements I, J {\n" +
" ^\n" +
"The return types are incompatible for the inherited methods I.b(), X.b()\n" +
"----------\n" +
"3. ERROR in Y.java (at line 13)\n" +
" abstract class Y extends X implements I, J {\n" +
" ^\n" +
"The return types are incompatible for the inherited methods I.a(), J.a()\n" +
"----------\n" +
"4. ERROR in Y.java (at line 20)\n" +
" abstract class Y2 extends X implements J, I {\n" +
" ^^\n" +
"The return types are incompatible for the inherited methods J.c(), X.c()\n" +
"----------\n" +
"5. ERROR in Y.java (at line 20)\n" +
" abstract class Y2 extends X implements J, I {\n" +
" ^^\n" +
"The return types are incompatible for the inherited methods I.b(), X.b()\n" +
"----------\n" +
"6. ERROR in Y.java (at line 20)\n" +
" abstract class Y2 extends X implements J, I {\n" +
" ^^\n" +
"The return types are incompatible for the inherited methods J.a(), I.a()\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=206930
public void test074() {
this.runNegativeTest(
new String[] {
"Y.java",
"interface I<T> {}\n" +
"class A {\n" +
" void a(I x) {}\n" +
" void b(I<?> x) {}\n" +
" void b(I<?>[] x) {}\n" +
" <U> void c(I<?> x) {}\n" +
"}\n" +
"class B extends A {}\n" +
"class C extends B implements I {\n" +
" void a(C c) {}\n" +
" void b(C c) {}\n" +
" void b(C[] c) {}\n" +
" void c(C c) {}\n" +
"}\n" +
"class D extends C {\n" +
" void test() {\n" +
" a(new C());\n" +
" a(new D());\n" +
" b(new C());\n" + // ambiguous b(I<?>) in A and b(C) in C match
" b(new D());\n" + // ambiguous b(I<?>) in A and b(C) in C match
" b(new C[0]);\n" + // ambiguous b(I<?>[]) in A and b(C[]) in C match
" b(new D[0]);\n" + // ambiguous b(I<?>[]) in A and b(C[]) in C match
" c(new C());\n" + // ambiguous <U>c(I<?>) in A and c(C) in C match
" c(new D());\n" + // ambiguous <U>c(I<?>) in A and c(C) in C match
" }\n" +
"}\n" +
"class A2<T> {\n" +
" void a(I x) {}\n" +
" void b(I<?> x) {}\n" +
" <U> void c(I<?> x) {}\n" +
" void d(I<T> x) {}\n" +
"}\n" +
"class B2 extends A2 {}\n" +
"class C2 extends B2 implements I {\n" +
" void a(C2 c) {}\n" +
" void b(C2 c) {}\n" +
" void c(C2 c) {}\n" +
" void d(C2 c) {}\n" +
"}\n" +
"class D2 extends C2 {\n" +
" void test() {\n" +
" a(new C2());\n" +
" a(new D2());\n" +
" b(new C2());\n" +
" b(new D2());\n" +
" c(new C2());\n" +
" c(new D2());\n" +
" d(new C2());\n" +
" d(new D2());\n" +
" }\n" +
"}"
},
"----------\n" +
"1. WARNING in Y.java (at line 3)\n" +
" void a(I x) {}\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n" +
"2. WARNING in Y.java (at line 9)\n" +
" class C extends B implements I {\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n" +
"3. ERROR in Y.java (at line 19)\n" +
" b(new C());\n" +
" ^\n" +
"The method b(C) is ambiguous for the type D\n" +
"----------\n" +
"4. ERROR in Y.java (at line 20)\n" +
" b(new D());\n" +
" ^\n" +
"The method b(C) is ambiguous for the type D\n" +
"----------\n" +
"5. ERROR in Y.java (at line 21)\n" +
" b(new C[0]);\n" +
" ^\n" +
"The method b(C[]) is ambiguous for the type D\n" +
"----------\n" +
"6. ERROR in Y.java (at line 22)\n" +
" b(new D[0]);\n" +
" ^\n" +
"The method b(C[]) is ambiguous for the type D\n" +
"----------\n" +
"7. ERROR in Y.java (at line 23)\n" +
" c(new C());\n" +
" ^\n" +
"The method c(C) is ambiguous for the type D\n" +
"----------\n" +
"8. ERROR in Y.java (at line 24)\n" +
" c(new D());\n" +
" ^\n" +
"The method c(C) is ambiguous for the type D\n" +
"----------\n" +
"9. WARNING in Y.java (at line 28)\n" +
" void a(I x) {}\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n" +
"10. WARNING in Y.java (at line 33)\n" +
" class B2 extends A2 {}\n" +
" ^^\n" +
"A2 is a raw type. References to generic type A2<T> should be parameterized\n" +
"----------\n" +
"11. WARNING in Y.java (at line 34)\n" +
" class C2 extends B2 implements I {\n" +
" ^\n" +
"I is a raw type. References to generic type I<T> should be parameterized\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=266421
public void test075() {
this.runNegativeTest(
new String[] {
"C.java",
"abstract class A<T extends Comparable> {\n" +
" abstract int x(T val);\n" +
"}\n" +
"class B<T extends Comparable> extends A<T> {\n" +
" @Override int x(T val) { return 0; }\n" +
"}\n" +
"class C extends B<Double> {\n" +
" int test(Double val) { return x(val); }\n" +
"}"
},
"----------\n" +
"1. WARNING in C.java (at line 1)\n" +
" abstract class A<T extends Comparable> {\n" +
" ^^^^^^^^^^\n" +
"Comparable is a raw type. References to generic type Comparable<T> should be parameterized\n" +
"----------\n" +
"2. WARNING in C.java (at line 4)\n" +
" class B<T extends Comparable> extends A<T> {\n" +
" ^^^^^^^^^^\n" +
"Comparable is a raw type. References to generic type Comparable<T> should be parameterized\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=268837
// See that this test case exhibits the bug 345947
public void test076() {
String output = (this.complianceLevel == ClassFileConstants.JDK1_6)?
"----------\n" +
"1. WARNING in X.java (at line 8)\n" +
" <U> J<String> b();\n" +
" ^^^\n" +
"Name clash: The method b() of type J<E> has the same erasure as b() of type I<E> but does not override it\n" +
"----------\n" +
"2. ERROR in X.java (at line 15)\n" +
" J<Integer> b = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to J<Integer>\n" +
"----------\n" +
"3. ERROR in X.java (at line 16)\n" +
" J<Object> c = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to J<Object>\n" +
"----------\n" +
"4. WARNING in X.java (at line 17)\n" +
" J d = ints.a();\n" +
" ^\n" +
"J is a raw type. References to generic type J<E> should be parameterized\n" +
"----------\n" +
"5. ERROR in X.java (at line 19)\n" +
" I<Integer> f = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to I<Integer>\n" +
"----------\n" +
"6. ERROR in X.java (at line 20)\n" +
" I<Object> g = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to I<Object>\n" +
"----------\n" +
"7. WARNING in X.java (at line 21)\n" +
" I h = ints.a();\n" +
" ^\n" +
"I is a raw type. References to generic type I<E> should be parameterized\n" +
"----------\n" +
"8. ERROR in X.java (at line 24)\n" +
" ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"9. ERROR in X.java (at line 25)\n" +
" J<String> a = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"10. ERROR in X.java (at line 26)\n" +
" J<Integer> b = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"11. ERROR in X.java (at line 27)\n" +
" J<Object> c = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"12. WARNING in X.java (at line 28)\n" +
" J d = ints.b();\n" +
" ^\n" +
"J is a raw type. References to generic type J<E> should be parameterized\n" +
"----------\n" +
"13. ERROR in X.java (at line 28)\n" +
" J d = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"14. ERROR in X.java (at line 29)\n" +
" I<String> e = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"15. ERROR in X.java (at line 30)\n" +
" I<Integer> f = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"16. ERROR in X.java (at line 31)\n" +
" I<Object> g = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"17. WARNING in X.java (at line 32)\n" +
" I h = ints.b();\n" +
" ^\n" +
"I is a raw type. References to generic type I<E> should be parameterized\n" +
"----------\n" +
"18. ERROR in X.java (at line 32)\n" +
" I h = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"19. WARNING in X.java (at line 39)\n" +
" J d = ints.c();\n" +
" ^\n" +
"J is a raw type. References to generic type J<E> should be parameterized\n" +
"----------\n" +
"20. WARNING in X.java (at line 43)\n" +
" I h = ints.c();\n" +
" ^\n" +
"I is a raw type. References to generic type I<E> should be parameterized\n" +
"----------\n":
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" <U> J<String> b();\n" +
" ^^^\n" +
"Name clash: The method b() of type J<E> has the same erasure as b() of type I<E> but does not override it\n" +
"----------\n" +
"2. ERROR in X.java (at line 15)\n" +
" J<Integer> b = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to J<Integer>\n" +
"----------\n" +
"3. ERROR in X.java (at line 16)\n" +
" J<Object> c = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to J<Object>\n" +
"----------\n" +
"4. WARNING in X.java (at line 17)\n" +
" J d = ints.a();\n" +
" ^\n" +
"J is a raw type. References to generic type J<E> should be parameterized\n" +
"----------\n" +
"5. ERROR in X.java (at line 19)\n" +
" I<Integer> f = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to I<Integer>\n" +
"----------\n" +
"6. ERROR in X.java (at line 20)\n" +
" I<Object> g = ints.a();\n" +
" ^^^^^^^^\n" +
"Type mismatch: cannot convert from J<String> to I<Object>\n" +
"----------\n" +
"7. WARNING in X.java (at line 21)\n" +
" I h = ints.a();\n" +
" ^\n" +
"I is a raw type. References to generic type I<E> should be parameterized\n" +
"----------\n" +
"8. ERROR in X.java (at line 24)\n" +
" ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"9. ERROR in X.java (at line 25)\n" +
" J<String> a = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"10. ERROR in X.java (at line 26)\n" +
" J<Integer> b = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"11. ERROR in X.java (at line 27)\n" +
" J<Object> c = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"12. WARNING in X.java (at line 28)\n" +
" J d = ints.b();\n" +
" ^\n" +
"J is a raw type. References to generic type J<E> should be parameterized\n" +
"----------\n" +
"13. ERROR in X.java (at line 28)\n" +
" J d = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"14. ERROR in X.java (at line 29)\n" +
" I<String> e = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"15. ERROR in X.java (at line 30)\n" +
" I<Integer> f = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"16. ERROR in X.java (at line 31)\n" +
" I<Object> g = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"17. WARNING in X.java (at line 32)\n" +
" I h = ints.b();\n" +
" ^\n" +
"I is a raw type. References to generic type I<E> should be parameterized\n" +
"----------\n" +
"18. ERROR in X.java (at line 32)\n" +
" I h = ints.b();\n" +
" ^\n" +
"The method b() is ambiguous for the type J<Integer>\n" +
"----------\n" +
"19. WARNING in X.java (at line 39)\n" +
" J d = ints.c();\n" +
" ^\n" +
"J is a raw type. References to generic type J<E> should be parameterized\n" +
"----------\n" +
"20. WARNING in X.java (at line 43)\n" +
" I h = ints.c();\n" +
" ^\n" +
"I is a raw type. References to generic type I<E> should be parameterized\n" +
"----------\n";
this.runNegativeTest(
new String[] {
"X.java",
"interface I<E> {\n" +
" I<String> a();\n" +
" I<String> b();\n" +
" <T1> I<T1> c();\n" +
"}\n" +
"interface J<E> extends I<E> {\n" +
" J<String> a();\n" +
" <U> J<String> b();\n" +
" <T2> J<T2> c();\n" +
"}\n" +
"class X {\n" +
" void a(J<Integer> ints) {\n" +
" ints.a();\n" +
" J<String> a = ints.a();\n" +
" J<Integer> b = ints.a();\n" + // incompatible types
" J<Object> c = ints.a();\n" + // incompatible types
" J d = ints.a();\n" +
" I<String> e = ints.a();\n" +
" I<Integer> f = ints.a();\n" + // incompatible types
" I<Object> g = ints.a();\n" + // incompatible types
" I h = ints.a();\n" +
" }\n" +
" void b(J<Integer> ints) {\n" +
" ints.b();\n" + // ambiguous
" J<String> a = ints.b();\n" + // ambiguous
" J<Integer> b = ints.b();\n" + // ambiguous
" J<Object> c = ints.b();\n" + // ambiguous
" J d = ints.b();\n" + // ambiguous
" I<String> e = ints.b();\n" + // ambiguous
" I<Integer> f = ints.b();\n" + // ambiguous
" I<Object> g = ints.b();\n" + // ambiguous
" I h = ints.b();\n" + // ambiguous
" }\n" +
" void c(J<Integer> ints) {\n" +
" ints.c();\n" +
" J<String> a = ints.c();\n" +
" J<Integer> b = ints.c();\n" +
" J<Object> c = ints.c();\n" +
" J d = ints.c();\n" +
" I<String> e = ints.c();\n" +
" I<Integer> f = ints.c();\n" +
" I<Object> g = ints.c();\n" +
" I h = ints.c();\n" +
" }\n" +
"}"
},
output
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=270194
public void test077() {
this.runConformTest(
new String[] {
"X.java",
"abstract class X implements I {\n" +
" public <A extends J<A, D>, D extends J<A, D>> A method(A arg) { return null; }\n" +
" void test(Y<String> c) { method(c); }\n" +
"}\n" +
"interface I {\n" +
" <A extends J<A,D>, D extends J<A,D>> A method(A arg);\n" +
"}\n" +
"interface J<A extends J<A,D>, D extends J<A,D>> {}\n" +
"class Y<E> implements J<Y<E>, Y<E>> {}"
},
""
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=287592
public void test078() {
this.runNegativeTest(
new String[] {
"X.java",
"class X {\n" +
" class Field<T> { T value; }\n" +
" <T> void a(T value) {}\n" +
" <T> void a(Field<T> field) {}\n" +
" <T extends Number> void b(T value) {}\n" +
" <T> void b(Field<T> field) {}\n" +
" void c(String value) {}\n" +
" void c(Field<String> field) {}\n" +
" void test(X x) {\n" +
" x.a(null);\n" +
" x.<String>a(null);\n" +
" x.b(null);\n" +
" x.<Integer>b(null);\n" +
" x.c(null);\n" +
" }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 12)\n" +
" x.b(null);\n" +
" ^\n" +
"The method b(Number) is ambiguous for the type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 13)\n" +
" x.<Integer>b(null);\n" +
" ^\n" +
"The method b(Integer) is ambiguous for the type X\n" +
"----------\n" +
"3. ERROR in X.java (at line 14)\n" +
" x.c(null);\n" +
" ^\n" +
"The method c(String) is ambiguous for the type X\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=292350
// See that this test case exhibits the bug 345947
public void test079() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I<T> {}\n" +
"class A {}\n" +
"class B extends A {}\n" +
"interface One {\n" +
" I<B> x() throws IllegalAccessError;\n" +
" <T extends A> I<T> y() throws IllegalAccessError;\n" +
"}\n" +
"interface Two extends One {\n" +
" <T extends A> I<T> x() throws IllegalAccessError;\n" +
" I<B> y() throws IllegalAccessError;\n" +
"}\n" +
"class X {\n" +
" void x(Two t) { t.x(); }\n" +
" void y(Two t) { t.y(); }\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" <T extends A> I<T> x() throws IllegalAccessError;\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Name clash: The method x() of type Two has the same erasure as x() of type One but does not override it\n" +
"----------\n" +
"2. WARNING in X.java (at line 10)\n" +
" I<B> y() throws IllegalAccessError;\n" +
" ^\n" +
"Type safety: The return type I<B> for y() from the type Two needs unchecked conversion to conform to I<A> from the type One\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=293384
public void test080() {
this.runConformTest(
new String[] {
"X.java",
"public class X<Tout extends Object> {\n" +
" static public abstract class BaseA {};\n" +
" static public abstract class BaseB extends BaseA {};\n" +
" static public class Real extends BaseB {};\n" +
" static BaseA ask(String prompt) {\n" +
" Real impl = new Real();\n" +
" return (BaseA) ask(prompt, impl);\n" +
" }\n" +
" static BaseA ask(String prompt, Real impl) {\n" +
" return null;\n" +
" }\n" +
" static <T extends BaseA> T ask(String prompt, T impl) {\n" +
" return null;\n" +
" }\n" +
" static public void main(String[] args) {\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}\n"
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302358
public void test081() {
this.runConformTest(
new String[] {
"C.java",
"class A<ModelType extends D, ValueType> implements I<ModelType, ValueType> {\n" +
" public void doSet(ModelType valueGetter) {\n" +
" this.set((ValueType) valueGetter.getObject());\n" +
" }\n" +
" public void set(Object object) {\n" +
" System.out.println(\"In A.set(Object)\");\n" +
" }\n" +
"}\n" +
"class B extends A<E, CharSequence> {\n" +
" public void set(CharSequence string) {\n" +
" System.out.println(\"In B.set(CharSequence)\");\n" +
" }\n" +
"}\n" +
"public class C extends B {\n" +
" static public void main(String[] args) {\n" +
" C c = new C();\n" +
" c.run();\n" +
" }\n" +
" public void run() {\n" +
" E e = new E<String>(String.class);\n" +
" this.doSet(e);\n" +
" }\n" +
"}\n" +
"class D {\n" +
" public Object getObject() {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class E<Type extends CharSequence> extends D {\n" +
" private Class<Type> typeClass;\n" +
" public E(Class<Type> typeClass) {\n" +
" this.typeClass = typeClass;\n" +
" }\n" +
" public Type getObject() {\n" +
" try {\n" +
" return (Type) typeClass.newInstance();\n" +
" } catch (Exception e) {\n" +
" throw new RuntimeException(e);\n" +
" }\n" +
" }\n" +
"}\n" +
"interface I<ModelType, ValueType> {\n" +
" public void doSet(ModelType model);\n" +
" public void set(ValueType value);\n" +
"}\n"
},
"In B.set(CharSequence)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302358
public void test082() {
this.runConformTest(
new String[] {
"C.java",
"class A<ModelType extends D, ValueType> extends I<ModelType, ValueType> {\n" +
" public void doSet(ModelType valueGetter) {\n" +
" this.set((ValueType) valueGetter.getObject());\n" +
" }\n" +
" public void set(Object object) {\n" +
" System.out.println(\"In A.set(Object)\");\n" +
" }\n" +
"}\n" +
"class B extends A<E, CharSequence> {\n" +
" public void set(CharSequence string) {\n" +
" System.out.println(\"In B.set(CharSequence)\");\n" +
" }\n" +
"}\n" +
"public class C extends B {\n" +
" static public void main(String[] args) {\n" +
" C c = new C();\n" +
" c.run();\n" +
" }\n" +
" public void run() {\n" +
" E e = new E<String>(String.class);\n" +
" this.doSet(e);\n" +
" }\n" +
"}\n" +
"class D {\n" +
" public Object getObject() {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class E<Type extends CharSequence> extends D {\n" +
" private Class<Type> typeClass;\n" +
" public E(Class<Type> typeClass) {\n" +
" this.typeClass = typeClass;\n" +
" }\n" +
" public Type getObject() {\n" +
" try {\n" +
" return (Type) typeClass.newInstance();\n" +
" } catch (Exception e) {\n" +
" throw new RuntimeException(e);\n" +
" }\n" +
" }\n" +
"}\n" +
"abstract class I<ModelType, ValueType> {\n" +
" public abstract void doSet(ModelType model);\n" +
" public abstract void set(ValueType value);\n" +
"}\n"
},
"In B.set(CharSequence)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302358
public void test083() {
this.runConformTest(
new String[] {
"C.java",
"class A<ModelType extends D, ValueType> implements I<ModelType, ValueType> {\n" +
" public void doSet(ModelType valueGetter) {\n" +
" this.set((ValueType) valueGetter.getObject());\n" +
" }\n" +
" public void set(Object object) {\n" +
" System.out.println(\"In A.set(Object)\");\n" +
" }\n" +
"}\n" +
"class B extends A<E, CharSequence> implements I<E, CharSequence> {\n" +
" public void set(CharSequence string) {\n" +
" System.out.println(\"In B.set(CharSequence)\");\n" +
" }\n" +
"}\n" +
"public class C extends B {\n" +
" static public void main(String[] args) {\n" +
" C c = new C();\n" +
" c.run();\n" +
" }\n" +
" public void run() {\n" +
" E e = new E<String>(String.class);\n" +
" this.doSet(e);\n" +
" }\n" +
"}\n" +
"class D {\n" +
" public Object getObject() {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class E<Type extends CharSequence> extends D {\n" +
" private Class<Type> typeClass;\n" +
" public E(Class<Type> typeClass) {\n" +
" this.typeClass = typeClass;\n" +
" }\n" +
" public Type getObject() {\n" +
" try {\n" +
" return (Type) typeClass.newInstance();\n" +
" } catch (Exception e) {\n" +
" throw new RuntimeException(e);\n" +
" }\n" +
" }\n" +
"}\n" +
"interface I<ModelType, ValueType> {\n" +
" public void doSet(ModelType model);\n" +
" public void set(ValueType value);\n" +
"}\n"
},
"In B.set(CharSequence)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302358
public void test084() {
this.runConformTest(
new String[] {
"C.java",
"abstract class A<ModelType extends D, ValueType> implements I<ModelType, ValueType> {\n" +
" public void doSet(ModelType valueGetter) {\n" +
" this.set((ValueType) valueGetter.getObject());\n" +
" }\n" +
" public void set(Object object) {\n" +
" System.out.println(\"In A.set(Object)\");\n" +
" }\n" +
"}\n" +
"class B extends A<E, CharSequence> {\n" +
"}\n" +
"public class C extends B {\n" +
" static public void main(String[] args) {\n" +
" C c = new C();\n" +
" c.run();\n" +
" }\n" +
" public void run() {\n" +
" E e = new E<String>(String.class);\n" +
" this.doSet(e);\n" +
" }\n" +
"}\n" +
"class D {\n" +
" public Object getObject() {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class E<Type extends CharSequence> extends D {\n" +
" private Class<Type> typeClass;\n" +
" public E(Class<Type> typeClass) {\n" +
" this.typeClass = typeClass;\n" +
" }\n" +
" public Type getObject() {\n" +
" try {\n" +
" return (Type) typeClass.newInstance();\n" +
" } catch (Exception e) {\n" +
" throw new RuntimeException(e);\n" +
" }\n" +
" }\n" +
"}\n" +
"interface I<ModelType, ValueType> {\n" +
" public void doSet(ModelType model);\n" +
" public void set(ValueType value);\n" +
"}\n"
},
"In A.set(Object)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302358
public void test085() {
this.runConformTest(
new String[] {
"C.java",
"class A<ModelType extends D, ValueType> implements I<ModelType, ValueType> {\n" +
" public void doSet(ModelType valueGetter) {\n" +
" this.set((ValueType) valueGetter.getObject());\n" +
" }\n" +
" public void set(Object object) {\n" +
" System.out.println(\"In A.set(Object)\");\n" +
" }\n" +
"}\n" +
"class B extends A<E, CharSequence> {\n" +
"}\n" +
"public class C extends B {\n" +
" static public void main(String[] args) {\n" +
" C c = new C();\n" +
" c.run();\n" +
" }\n" +
" public void run() {\n" +
" E e = new E<String>(String.class);\n" +
" this.doSet(e);\n" +
" }\n" +
"}\n" +
"class D {\n" +
" public Object getObject() {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class E<Type extends CharSequence> extends D {\n" +
" private Class<Type> typeClass;\n" +
" public E(Class<Type> typeClass) {\n" +
" this.typeClass = typeClass;\n" +
" }\n" +
" public Type getObject() {\n" +
" try {\n" +
" return (Type) typeClass.newInstance();\n" +
" } catch (Exception e) {\n" +
" throw new RuntimeException(e);\n" +
" }\n" +
" }\n" +
"}\n" +
"interface I<ModelType, ValueType> {\n" +
" public void doSet(ModelType model);\n" +
" public void set(ValueType value);\n" +
"}\n"
},
"In A.set(Object)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=302358
public void test086() {
this.runConformTest(
new String[] {
"C.java",
"class A<ModelType extends D, ValueType> {\n" +
" public void doSet(ModelType valueGetter) {\n" +
" this.set((ValueType) valueGetter.getObject());\n" +
" }\n" +
" public void set(Object object) {\n" +
" System.out.println(\"In A.set(Object)\");\n" +
" }\n" +
"}\n" +
"class B extends A<E, CharSequence> {\n" +
" public void set(CharSequence string) {\n" +
" System.out.println(\"In B.set(CharSequence)\");\n" +
" }\n" +
"}\n" +
"public class C extends B {\n" +
" static public void main(String[] args) {\n" +
" C c = new C();\n" +
" c.run();\n" +
" }\n" +
" public void run() {\n" +
" E e = new E<String>(String.class);\n" +
" this.doSet(e);\n" +
" }\n" +
"}\n" +
"class D {\n" +
" public Object getObject() {\n" +
" return null;\n" +
" }\n" +
"}\n" +
"class E<Type extends CharSequence> extends D {\n" +
" private Class<Type> typeClass;\n" +
" public E(Class<Type> typeClass) {\n" +
" this.typeClass = typeClass;\n" +
" }\n" +
" public Type getObject() {\n" +
" try {\n" +
" return (Type) typeClass.newInstance();\n" +
" } catch (Exception e) {\n" +
" throw new RuntimeException(e);\n" +
" }\n" +
" }\n" +
"}\n" +
"interface I<ModelType, ValueType> {\n" +
" public void doSet(ModelType model);\n" +
" public void set(ValueType value);\n" +
"}\n"
},
"In A.set(Object)");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=321485
public void test087() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.Collection;\n" +
"import java.util.List;\n" +
"public class X {\n" +
" public static <T> List<T> with(List<? extends T> p) { return null; } \n" +
" public static <T> Collection<T> with(Collection<T> p) { return null; }\n" +
" static { with(null); }\n" +
"} \n"
},
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" static { with(null); }\n" +
" ^^^^\n" +
"The method with(List<? extends Object>) is ambiguous for the type X\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=354579
public void test088a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" int foo () { return 0; } \n" +
" double foo() { return 0.0; }\n" +
"} \n"
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" int foo () { return 0; } \n" +
" ^^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 3)\n" +
" double foo() { return 0.0; }\n" +
" ^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n"
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=354579
public void test088b() {
this.runNegativeTest(
new String[] {
"X.java",
"public interface X {\n" +
" int foo (); \n" +
" double foo();\n" +
"} \n"
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" int foo (); \n" +
" ^^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 3)\n" +
" double foo();\n" +
" ^^^^^\n" +
"Duplicate method foo() in type X\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=354579
public void test089() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" int m2(List<Integer> a) {return 0;} \n" +
" double m2(List<Integer> b) {return 0.0;}\n" +
"} \n"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" int m2(List<Integer> a) {return 0;} \n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Duplicate method m2(List<Integer>) in type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" double m2(List<Integer> b) {return 0.0;}\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Duplicate method m2(List<Integer>) in type X\n" +
"----------\n"
);
}
}