Java 3D Desktop Environment旨在使用Java 3D来创建一个3D桌面环境。功能包括：分布式的应用程序

				package org.j3de.behavior;
				
				import java.util.EventObject;
				
				import javax.media.j3d.Node;
				import javax.media.j3d.PickShape;
				
				public class FocusEvent extends EventObject {      
				  private PickShape pickShape;
				  
				  public FocusEvent(Node source, PickShape pickShape) {
				    super(source);
				    this.pickShape = pickShape;
				  }              
				  
				  public Node getNode() {
				    return (Node)getSource();
				  }                           
				  
				  public PickShape getPickShape() {
				    return pickShape;
				  }
				    
				}