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Commons Collections example source code file (NOPClosure.java)

This example Commons Collections source code file (NOPClosure.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Collections tags/keywords

closure, closure, instance, instance, io, nopclosure, nopclosure, serializable, serializable

The Commons Collections NOPClosure.java source code

 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.functors;

import java.io.Serializable;

import org.apache.commons.collections.Closure;

 * Closure implementation that does nothing.
 * @since Commons Collections 3.0
 * @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $
 * @author Stephen Colebourne
public class NOPClosure implements Closure, Serializable {

    /** Serial version UID */
    private static final long serialVersionUID = 3518477308466486130L;

    /** Singleton predicate instance */
    public static final Closure INSTANCE = new NOPClosure();

     * Factory returning the singleton instance.
     * @return the singleton instance
     * @since Commons Collections 3.1
    public static Closure getInstance() {
        return INSTANCE;

     * Constructor
    private NOPClosure() {

     * Do nothing.
     * @param input  the input object
    public void execute(Object input) {
        // do nothing


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