1 files changed, 0 insertions, 80 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/Queue.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/Queue.java
deleted file mode 100644
index 4f46bbb4c4..0000000000
--- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/Queue.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2009, 2011 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.common.utility.internal;
-
-import java.io.Serializable;
-import java.util.NoSuchElementException;
-
-/**
- * Interface defining the classic queue behavior,
- * without the backdoors allowed by {@link java.util.Queue}.
- * 
- * @param <E> the type of elements contained by the queue
- */
-public interface Queue<E> {
-
-	/**
-	 * "Enqueue" the specified item to the tail of the queue.
-	 */
-	void enqueue(E o);
-
-	/**
-	 * "Dequeue" an item from the head of the queue.
-	 */
-	E dequeue();
-
-	/**
-	 * Return the item on the head of the queue
-	 * without removing it from the queue.
-	 */
-	E peek();
-
-	/**
-	 * Return whether the queue is empty.
-	 */
-	boolean isEmpty();
-
-
-	final class Empty<E>
-		implements Queue<E>, Serializable
-	{
-		@SuppressWarnings("rawtypes")
-		public static final Queue INSTANCE = new Empty();
-		@SuppressWarnings("unchecked")
-		public static <T> Queue<T> instance() {
-			return INSTANCE;
-		}
-		// ensure single instance
-		private Empty() {
-			super();
-		}
-		public void enqueue(E o) {
-			throw new UnsupportedOperationException();
-		}
-		public E dequeue() {
-			throw new NoSuchElementException();
-		}
-		public E peek() {
-			throw new NoSuchElementException();
-		}
-		public boolean isEmpty() {
-			return true;
-		}
-		@Override
-		public String toString() {
-			return StringTools.buildSingletonToString(this);
-		}
-		private static final long serialVersionUID = 1L;
-		private Object readResolve() {
-			// replace this object with the singleton
-			return INSTANCE;
-		}
-	}
-}