Java by API/java.beans.beancontext/BeanContextMembershipListener

implements BeanContextMembershipListener

   <source lang="java">
 

/*

* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
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* -Redistribution in binary form must reproduce the above copyright notice,
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*
* This software is provided "AS IS," without a warranty of any kind. ALL
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import java.beans.beancontext.BeanContextChildSupport; import java.beans.beancontext.BeanContextMembershipEvent; import java.beans.beancontext.BeanContextMembershipListener; import java.beans.beancontext.BeanContextSupport; /**

* A simple test program to illustrate delivery of the
* BeanContextMembershipEvent.
*/

public class MembershipTest {

 public static void main(String[] args) {
   BeanContextSupport context = new BeanContextSupport(); // the context
   MyMembershipListener listener = new MyMembershipListener();
   BeanContextChildSupport bean = new BeanContextChildSupport(); // a
                                   // JavaBean
   context.addBeanContextMembershipListener(listener); // now listening!
   context.add(bean);
   context.remove(bean);
 }

} /**

* A custom implementation of the BeanContextMembershipListener interface.
*/

class MyMembershipListener implements BeanContextMembershipListener {

 public void childrenAdded(BeanContextMembershipEvent bcme) {
   System.out.println("Another bean has been added to the context.");
 }
 public void childrenRemoved(BeanContextMembershipEvent bcme) {
   System.out.println("A bean has been removed from the context.");
 }

}

 </source>