关闭所有窗口

		命名.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		}
				);//关闭角

关闭子窗口，但不关闭父窗口

命名.addWindowListener(new WindowAdapter() {
	     public void windowClosing(WindowEvent e) {
    	        命名.dispose();
		         }
	      }
			      	);//关闭角