myframe.java

java 完全探索的随书源码

import java.awt.event.*;
import javax.swing.*;

public class MyFrame extends JFrame {

  public MyFrame() {

    // declare an inner class that extends an adapter class
    class MyWindowAdapter extends WindowAdapter {
      // only do something when the window is closing
      public void windowClosing(WindowEvent e) {
        System.out.println("Window about to close");
        System.exit(0);
      }
    }
    this.addWindowListener( new MyWindowAdapter() );

    // use an anonymous adapter class instead
    this.addWindowListener( new WindowAdapter() {
      // only do something when the window is activated
      public void windowActivated(WindowEvent e) {
        System.out.println("Window is active");
      }
    } );
  }

  public static void main(String[] args) {
    MyFrame frame = new MyFrame();
    frame.setVisible(true);
  }
}