programwithnamedlistener.java

来自「Java程序设计技巧与开发实例附书源代码。」· Java 代码 · 共 29 行

import java.awt.*;
import java.awt.event.*;

public class ProgramWithNamedListener
    extends Frame
{ //内部类作为class类型的域
  private class InnerWindowCloser
      extends WindowAdapter
  {
    public void windowClosing(WindowEvent we)
    {
      System.exit(0);
    }
  }

  public ProgramWithNamedListener()
  {
    addWindowListener(new InnerWindowCloser());
    setSize(200, 200);
    setVisible(true);
  }

  public static void main(String args[])
  {
    ProgramWithNamedListener p = new ProgramWithNamedListener();
  }
}