import javax.swing.*;

public class Main
{
	public static void main(String args[])
	{
		JFrame f = new JFrame("窗口") ;
		f.setSize(200,200) ;
		f.addWindowListener(new MyAdapter()) ;
		JButton btn = new JButton("按下我") ;
		btn.addActionListener(new MyHandler()) ;
		f.getContentPane().add(btn) ;
		f.show() ;
	}
}