Add iterator to ensure implementation is as per v3.0

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@131751 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/commons/collections/iterators/EmptyOrderedIterator.java

@@ -0,0 +1,44 @@
+/*
+ *  Copyright 2004 The Apache Software Foundation
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.commons.collections.iterators;
+
+import org.apache.commons.collections.OrderedIterator;
+import org.apache.commons.collections.ResettableIterator;
+
+/** 
+ * Provides an implementation of an empty ordered iterator.
+ *
+ * @since Commons Collections 3.1
+ * @version $Revision: 1.1 $ $Date: 2004/05/26 21:52:40 $
+ * 
+ * @author Stephen Colebourne
+ */
+public class EmptyOrderedIterator extends AbstractEmptyIterator implements OrderedIterator, ResettableIterator {
+
+    /**
+     * Singleton instance of the iterator.
+     * @since Commons Collections 3.1
+     */
+    public static final OrderedIterator INSTANCE = new EmptyOrderedIterator();
+
+    /**
+     * Constructor.
+     */
+    protected EmptyOrderedIterator() {
+        super();
+    }
+
+}