适配器--学习笔记

标签：适配器--学习笔记

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

//GUI编程
public class Demo1 {
    public static void main(String[] args) {

        //创建一个不可见的窗体
        Frame frame = new Frame("我的窗体");

        //设置窗体的大小
        frame.setSize(200,250);

        //设置显示的位置
        frame.setLocation(300,200);

        //将窗体显示出来
        frame.setVisible(true);

        //为窗体添加事件[事件监听器监听事件源]
        frame.addWindowListener(new MyWindowListener());

    }
}
//事件监听器[扩展WindowAdapter适配器]
class MyWindowListener extends WindowAdapter{
    //重写父类相关的方法
    public void windowClosing(WindowEvent e) {
        Frame frame = (Frame) e.getSource();
        frame.setVisible(false);
        System.exit(1);
    }
}

/*
class MyWindowListener implements WindowListener{
    public void windowActivated(WindowEvent e) {
    }
    public void windowClosed(WindowEvent e) {
    }
    //事件处理程序,由监听器自动调用
    public void windowClosing(WindowEvent e) {
        //取得事件源
        Frame frame = (Frame) e.getSource();
        //将事件源隐藏
        frame.setVisible(false);
        //将JVM强行中止
        System.exit(1);
    }
    public void windowDeactivated(WindowEvent e) {
    }
    public void windowDeiconified(WindowEvent e) {
    }
    public void windowIconified(WindowEvent e) {
    }
    public void windowOpened(WindowEvent e) {
    }
}
*/

适配器--学习笔记

标签：适配器--学习笔记

原文地址：http://blog.51cto.com/357712148/2105540