窗口监听-匿名内部类-2022-12-10

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class windowDemo11 {
    public static void main(String[] args) {
        windowFrame windowFrame = new windowFrame();
    }
}

class windowFrame extends Frame{
    public windowFrame(){
        setBackground(Color.BLUE);
        setBounds(100,100,200,150);
        setVisible(true);

        //addWindowListener(new myWindowListener());

        this.addWindowListener(
                //匿名内部类
                new WindowAdapter() {
                    //关闭
                    @Override
                    public void windowClosing(WindowEvent e) {
                        System.out.println("windowClosing");
                        System.exit(0);
                    }
                    //激活
                    @Override
                    public void windowActivated(WindowEvent e) {
                        windowFrame windowFrame = (windowFrame) e.getSource();
                        windowFrame.setTitle("你激活了");
                        System.out.println("windowActivated");
                    }
                }
        );
    }

}