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Commons Collections example source code file (Closure.java)

This example Commons Collections source code file (Closure.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

The Commons Collections Closure.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;

/**
 * Defines a functor interface implemented by classes that do something.
 * <p>
 * A <code>Closure represents a block of code which is executed from
 * inside some block, function or iteration. It operates an input object.
 * <p>
 * Standard implementations of common closures are provided by
 * {@link ClosureUtils}. These include method invokation and for/while loops.
 *  
 * @since Commons Collections 1.0
 * @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $
 *
 * @author James Strachan
 * @author Nicola Ken Barozzi
 * @author Stephen Colebourne
 */
public interface Closure {

    /**
     * Performs an action on the specified input object.
     *
     * @param input  the input to execute on
     * @throws ClassCastException (runtime) if the input is the wrong class
     * @throws IllegalArgumentException (runtime) if the input is invalid
     * @throws FunctorException (runtime) if any other error occurs
     */
    public void execute(Object input);

}

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