窗口监听事件

package 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(100,100,200,200);
        setVisible(true);
        //addWindowListener(new MyWindowListener());
        this.addWindowListener(
                new WindowAdapter() {
                  
                    @Override
                    public void windowClosing(WindowEvent e) {
                        System.out.println("窗口正在关闭了");
                    }

                   

                    @Override
                    public void windowActivated(WindowEvent e) {
                        System.out.println("窗口激活");
                        WindowFrame source = (WindowFrame) e.getSource();
                        source.setTitle("被激活了");
                    }

                   
                }
        );

    }
    class MyWindowListener extends WindowAdapter {
        @Override
        public void windowClosing(WindowEvent e) {
            setVisible(false);  //隐藏窗口，通过按钮，隐藏当前窗口
            System.exit(0);   //0正常退出，1是非正常退出
        }
    }
}

标签：窗口,void,System,监听,事件,WindowEvent,WindowFrame,public
来源： https://blog.csdn.net/bianboxian018323/article/details/119281155