視窗監聽事件

package com.zishi.lesson03;
​
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
​
public class TestWindow {
  public static void main(String[] args) {
    new WindowFrame();
   }
}
​
class WindowFrame extends Frame{
  public WindowFrame(){
    setBackground(Color.BLUE
 
);
    setBounds(100,200,200,200);
    setVisible(true);
    //addWindowListener(new MyWindowListener());
​
    this.addWindowListener(
        //匿名內部類
        new WindowAdapter() {
          @Override
          public void windowOpened(WindowEvent e) {
            System.out.println("windowOpened");
           }
          //關閉視窗
 

          @Override
          public void windowClosing(WindowEvent e) {
            System.out.println("windowClosing");
            System.exit(0);
           }
​
          @Override
          public void windowClosed(WindowEvent e) {
            super.windowClosed(e);
           }
​
          @Override
          public
 
 void windowIconified(WindowEvent e) {
            super.windowIconified(e);
           }
​
          @Override
          public void windowDeiconified(WindowEvent e) {
            super.windowDeiconified(e);
           }
          //啟用視窗
          @Override
          public void windowActivated(WindowEvent e) {
            WindowFrame source= (WindowFrame) e.getSource();
            source.setTitle("激活了");
            System.out.println("windowActivated");
           }
​
          @Override
          public void windowDeactivated(WindowEvent e) {
            super.windowDeactivated(e);
           }
​
          @Override
          public void windowStateChanged(WindowEvent e) {
            super.windowStateChanged(e);
           }
​
          @Override
          public void windowGainedFocus(WindowEvent e) {
            super.windowGainedFocus(e);
           }
​
          @Override
          public void windowLostFocus(WindowEvent e) {
            super.windowLostFocus(e);
           }
         }
     );
​
   }
//   class MyWindowListener extends WindowAdapter{
//     @Override
//     public void windowClosing(WindowEvent e) {
//       setVisible(false);//隱藏視窗，通過按鈕隱藏當前視窗
//       System.exit(0);
//     }
//   }
}

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