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Groovy example source code file (

This example Groovy source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

eventlistener, eventlistener, metaclassregistrychangeeventlistener, metaclassregistrychangeeventlistener, util

The Groovy source code

 * Copyright 2003-2007 the original author or authors.
 * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package groovy.lang;

import java.util.EventListener;

 * A listener called whenever a constant MetaClass is set, removed or replaced. 
 * @see groovy.lang.MetaClassRegistry
 * @see groovy.lang.MetaClassRegistryChangeEvent
 * @author <a href="">Jochen Theodorou
public interface MetaClassRegistryChangeEventListener extends EventListener{

     * Called when the a constant MetaClass is updated. If the new MetaClass is null, then the MetaClass
     * is removed. Be careful, while this method is executed other updates may happen. If you want this
     * method thread safe, you have to take care of that by yourself.
     * @param cmcu - the change event
    void updateConstantMetaClass(MetaClassRegistryChangeEvent cmcu);

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