Java 入门图形用户界面设计之事件处理上

public class EventObject extends Object implements Serializable{
	public EventObject(Object source){
	// 构造一个发生事件的对象
	}
	public Object getSource(){
	// 返回一个事件对象
	}
	public String toString(){
	// 得到信息
	}
}

import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

public class WindowEventHandle implements WindowListener {
    @Override
    public void windowActivated(WindowEvent e) {
        System.out.println("窗口被选中");
    }

    @Override
    public void windowClosed(WindowEvent e) {
        System.out.println("窗口被关闭");
    }

    @Override
    public void windowClosing(WindowEvent e) {
        System.out.println("窗口关闭");
    }

    @Override
    public void windowDeactivated(WindowEvent e) {
        System.out.println("取消窗口选中");
    }

    @Override
    public void windowDeiconified(WindowEvent e) {
        System.out.println("窗口从最小化恢复");
    }

    @Override
    public void windowIconified(WindowEvent e) {
        System.out.println("窗口最小化");
    }

    @Override
    public void windowOpened(WindowEvent e) {
        System.out.println("窗口被打开");
    }
}

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

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        frame.addWindowListener(new WindowEventHandle());
        frame.setSize(500,300);
        frame.setBackground(Color.BLUE);
        frame.setLocation(500,500);
        frame.setVisible(true);
    }
}

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

public class WindowEventHandle extends WindowAdapter {
    @Override
    public void windowClosing(WindowEvent e) {
        super.windowClosing(e);
        System.out.println("窗口关闭");
        System.exit(1);
    }
}

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

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        frame.addWindowListener(new WindowEventHandle());
        frame.setSize(500,300);
        frame.setBackground(Color.BLUE);
        frame.setLocation(500,500);
        frame.setVisible(true);
    }
}

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

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        frame.addWindowListener(new WindowEventHandle(){
            @Override
            public void windowClosing(WindowEvent e) {
                super.windowClosing(e);
                System.exit(1);
            }
        });
        frame.setSize(500,300);
        frame.setBackground(Color.BLUE);
        frame.setLocation(500,500);
        frame.setVisible(true);
    }
}