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Diffstat (limited to 'plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ObjectUtil.java')
-rw-r--r--plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ObjectUtil.java220
1 files changed, 110 insertions, 110 deletions
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ObjectUtil.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ObjectUtil.java
index 43a51b8dae..b2572ea3ce 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ObjectUtil.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ObjectUtil.java
@@ -1,110 +1,110 @@
-/*
- * Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) 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:
- * Eike Stepper - initial API and implementation
- */
-package org.eclipse.net4j.util;
-
-import java.lang.reflect.Array;
-import java.util.Collection;
-import java.util.Map;
-
-/**
- * Various static helper methods.
- *
- * @author Eike Stepper
- */
-public final class ObjectUtil
-{
- private ObjectUtil()
- {
- }
-
- public static boolean equals(Object o1, Object o2)
- {
- if (o1 == null)
- {
- return o2 == null;
- }
-
- return o1.equals(o2);
- }
-
- public static int hashCode(Object o)
- {
- if (o == null)
- {
- return 0;
- }
-
- return o.hashCode();
- }
-
- /**
- * A collision-free hash code for small sets (<=4) of small, positive integers (<=128)
- *
- * @since 3.2
- */
- public static int hashCode(int... values)
- {
- int hash = 0;
- for (int i = 0; i < values.length; i++)
- {
- hash += values[i];
- hash = (hash << 7) - hash;
- }
-
- return hash;
- }
-
- public static int hashCode(long num)
- {
- return (int)(num >> 32) ^ (int)(num & 0xffffffff);
- }
-
- @SuppressWarnings("unchecked")
- public static <T> T[] appendtoArray(T[] array, T... elements)
- {
- T[] result = (T[])Array.newInstance(array.getClass().getComponentType(), array.length + elements.length);
- System.arraycopy(array, 0, result, 0, array.length);
- System.arraycopy(elements, 0, result, array.length, elements.length);
- return result;
- }
-
- /**
- * @since 3.1
- */
- public static <T> boolean isEmpty(T[] array)
- {
- return array == null || array.length == 0;
- }
-
- /**
- * @since 3.1
- */
- public static <T extends Map<?, ?>> boolean isEmpty(Map<?, ?> map)
- {
- return map == null || map.isEmpty();
- }
-
- /**
- * @since 3.1
- */
- public static <T extends Collection<?>> boolean isEmpty(Collection<?> collection)
- {
- return collection == null || collection.isEmpty();
- }
-
- /**
- * @since 3.1
- */
- public static boolean isEmpty(String string)
- {
- return string == null || string.length() == 0;
- }
-}
+/*
+ * Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) 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:
+ * Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util;
+
+import java.lang.reflect.Array;
+import java.util.Collection;
+import java.util.Map;
+
+/**
+ * Various static helper methods.
+ *
+ * @author Eike Stepper
+ */
+public final class ObjectUtil
+{
+ private ObjectUtil()
+ {
+ }
+
+ public static boolean equals(Object o1, Object o2)
+ {
+ if (o1 == null)
+ {
+ return o2 == null;
+ }
+
+ return o1.equals(o2);
+ }
+
+ public static int hashCode(Object o)
+ {
+ if (o == null)
+ {
+ return 0;
+ }
+
+ return o.hashCode();
+ }
+
+ /**
+ * A collision-free hash code for small sets (<=4) of small, positive integers (<=128)
+ *
+ * @since 3.2
+ */
+ public static int hashCode(int... values)
+ {
+ int hash = 0;
+ for (int i = 0; i < values.length; i++)
+ {
+ hash += values[i];
+ hash = (hash << 7) - hash;
+ }
+
+ return hash;
+ }
+
+ public static int hashCode(long num)
+ {
+ return (int)(num >> 32) ^ (int)(num & 0xffffffff);
+ }
+
+ @SuppressWarnings("unchecked")
+ public static <T> T[] appendtoArray(T[] array, T... elements)
+ {
+ T[] result = (T[])Array.newInstance(array.getClass().getComponentType(), array.length + elements.length);
+ System.arraycopy(array, 0, result, 0, array.length);
+ System.arraycopy(elements, 0, result, array.length, elements.length);
+ return result;
+ }
+
+ /**
+ * @since 3.1
+ */
+ public static <T> boolean isEmpty(T[] array)
+ {
+ return array == null || array.length == 0;
+ }
+
+ /**
+ * @since 3.1
+ */
+ public static <T extends Map<?, ?>> boolean isEmpty(Map<?, ?> map)
+ {
+ return map == null || map.isEmpty();
+ }
+
+ /**
+ * @since 3.1
+ */
+ public static <T extends Collection<?>> boolean isEmpty(Collection<?> collection)
+ {
+ return collection == null || collection.isEmpty();
+ }
+
+ /**
+ * @since 3.1
+ */
+ public static boolean isEmpty(String string)
+ {
+ return string == null || string.length() == 0;
+ }
+}

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