package xiaoyuanka;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.sql.*;
public class XiaoYuanKa {
public static void main(String args[])
{ new MyFrame();
}
}
(2) 设计主界面
class MyFrame extends JFrame implements ActionListener,ItemListener
{
static String classnum ;
static int hang,cool;
JLabel enter,number,secret;
JTextField numtext,secrettext;
JButton ok,cancel;
Checkbox student,manager;
CheckboxGroup ren;
Box base,bx0,bx1,bx2,bx3,bx4;
int k;
String s1;
int s2;
MyFrame()
{
enter=new JLabel(" 登录系统 ");
enter.setForeground(Color.red);
number=new JLabel(" 登录者 ");