package second;
import java.awt.Color;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.*;
public class Window extends Frame {
    public Window(String string){
        super(string);//调用父类构造方法
    }
    public static void main(String[] args){
        Window w = new Window("我的第一个window!!");//实例化
        w.setSize(500,300);//设置窗口大小
        w.setBackground(Color.blue);//背景颜色
        w.setTitle("哈哈，我才是第一个!");//标题
        w.setLayout(null);//取消布局管理器
        w.setVisible(true);//显示
        w.addWindowListener(w.new writeWindow());//添加窗口监视器
    }
    class writeWindow extends WindowAdapter {
        public void windowClosing(WindowEvent e){//监视关闭
            System.exit(0);
        }
    }
}