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.ui.impl;
				
				import javax.media.j3d.Bounds;
				
				public class UnknownBoundsException extends Exception {
				  public UnknownBoundsException(Bounds bounds) {
				    super("Unknown Bounds class : " + bounds.getClass().getName());
				  } 
				}