1 files changed, 0 insertions, 73 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/Stack.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/Stack.java
deleted file mode 100644
index 93bef64f4b..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/Stack.java
+++ /dev/null
@@ -1,73 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2007, 2008 Oracle. 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:
- *     Oracle - initial API and implementation
- ******************************************************************************/
-package org.eclipse.jpt.utility.internal;
-
-import java.io.Serializable;
-import java.util.EmptyStackException;
-
-/**
- * Interface defining the classic stack behavior,
- * without the backdoors allowed by java.util.Stack.
- * E is the type of elements contained by the Stack.
- */
-public interface Stack<E> {
-
-	/**
-	 * "Push" the specified item on to the top of the stack.
-	 */
-	void push(E o);
-
-	/**
-	 * "Pop" an item from the top of the stack.
-	 */
-	E pop();
-
-	/**
-	 * Return the item on the top of the stack
-	 * without removing it from the stack.
-	 */
-	E peek();
-
-	/**
-	 * Return whether the stack is empty.
-	 */
-	boolean isEmpty();
-
-
-	final class Empty<E> implements Stack<E>, Serializable {
-		@SuppressWarnings("unchecked")
-		public static final Stack INSTANCE = new Empty();
-		@SuppressWarnings("unchecked")
-		public static <T> Stack<T> instance() {
-			return INSTANCE;
-		}
-		// ensure single instance
-		private Empty() {
-			super();
-		}
-		public void push(E o) {
-			throw new UnsupportedOperationException();
-		}
-		public E pop() {
-			throw new EmptyStackException();
-		}
-		public E peek() {
-			throw new EmptyStackException();
-		}
-		public boolean isEmpty() {
-			return true;
-		}
-		private static final long serialVersionUID = 1L;
-		private Object readResolve() {
-			return INSTANCE;
-		}
-	}
-
-}