文档介绍：
package 菜单用户界面;
import .*;
public class SwingAWT extends JFrame{
private static final long serialVersionUID = 1L;
private JLabel ;
//创建菜单栏对象
private JMenuBar mb=new JMenuBar();
private JMenu mm=new JMenu("文体类");
private JMenuItem mi1=new JMenuItem("电影欣赏");
private JMenuItem mi2=new JMenuItem("街舞");
private JMenuItem mi3=new JMenuItem("足球");
private JMenu mm1=new JMenu("计算机类");
private JMenuItem mi11=new JMenuItem("java语言");
private JMenuItem mi21=new JMenuItem("网络编程");
private JMenu mm2=new JMenu("帮助");
private JMenuItem mi111=new JMenuItem("选课方法");
public SwingAWT()
{
//设置窗体的布局管理器为null
(null);
//将菜单选项添加进菜单中
(mi1);
(mi2);
(mi3);
(mi11);
(mi21);
(mi111);
//将菜单选项添加进菜单栏中
(mm);
(mm1);
(mm2);
//将菜单栏添加到窗体中
(mb);
//创建标签对
=new JLabel();
//设置标签在窗体中的位置
.setBounds(40, 30, 450, 30);
//将标签添加进窗体中
();
("选课系统");
(330, 250, 500, 150);
(true);
}
public static void main(String[] args) {
new SwingAWT();
}
}
package 笑脸;
import .*;
import .*;
public class face extends JFrame{
public static final long serialVersionUID=1L;
public face()
{
(null);
("变脸");
(330, 250, 500, 150);
t