waitforaction.java

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.events;        

import java.awt.event.ActionEvent; 
import java.rmi.RemoteException;

public class WaitForAction extends RemoteActionAdapter { 
  private long lastPerformed;
  
  public WaitForAction() throws RemoteException {           
    lastPerformed = 0;
  }                   
  
  public synchronized void actionPerformed(ActionEvent e) {
    lastPerformed = System.currentTimeMillis();    
    notifyAll();
  }          
  
  public synchronized boolean waitForAction(long maxTime) {   
    long performed = lastPerformed;
    try {
      wait(maxTime);      
    } catch (InterruptedException e) {}
    
    return (performed != lastPerformed);
  }

  
}