import java.awt.*;
import java.awt.event.*;
public class a5_9 extends Frame {
    MenuBar  mb=new MenuBar();
    Menu     menu=new Menu("Exit");
    MenuItem mi_Close=new MenuItem("退出");
   public a5_9()
	{ 
	  setTitle("獨立的圖形應(yīng)用程序");
	  menu.add(mi_Close);
	  mb.add(menu);
      setMenuBar(mb);
	   mi_Close.addActionListener( new WindowCloser() ); 
        setVisible(true);
        setSize(300,200);
	}
  public static void main(String args[]){ 
        a5_9 aa= new a5_9();    } 
}
  class  WindowCloser implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			System.exit(0);
		}
	}