这个是连接代码
01 import java.sql.Connection;
02 import java.sql.DriverManager;
03 import java.sql.SQLException;
04 public class ConnectionDemo02{
05 //public ConnectionDemo02 conn;
06 public static final String DBDRIVER="org.gjt.mm.mysql.Driver";
07 public static final String DBURL="jdbc:mysql://localhost:3306/wxf";
08 public static final String DBUSER="root";
09 public static final String DBPASS="26533621";
10 public static void main(String[] args){
11 Connection conn=null;
12 try{
13 Class.forName(DBDRIVER);
14 }catch (ClassNotFoundException e){
15 e.printStackTrace();
16 }
17 try{
18 conn=DriverManager.getConnection(DBURL,DBUSER,DBPASS);
19 }catch(SQLException e){
20 e.printStackTrace();
21 }
22 System.out.print(conn);
23 try{
24 conn.close();
25 }catch(SQLException e){
26 e.printStackTrace();
27 }
28 }
29 }

这是登陆界面
01 import java.awt.*;
02 import java.awt.event.*;
03 import java.sql.*;
04 import javax.swing.*;
05 import java.awt.geom.*;
06 import java.util.Vector;
07 public class denglu extends JFrame
08 {
09 public Label name=new Label("用户名");
10 public Label pass=new Label("密码");
11 public TextField txtname=new TextField();
12 public TextField txtpass=new TextField();
13 public Button btok=new Button("登陆");
14 public Button btexit=new Button("取消");
15 public denglu()
16 {
17 setTitle("欢迎使用工资管理系统");
18 setLayout(null);
19
20 setResizable(false);
21 setSize(500,350);
22
23 Dimension scr=Toolkit.getDefaultToolkit().getScreenSize();
24 Dimension frm=this.getSize();
25 setLocation((scr.width-frm.width)/2,(scr.height-frm.height)/2-18);
26 txtpass.setEchoChar('*');
27 name.setBounds(70,260,40,27);
28 pass.setBounds(70,300,40,27);
29 txtname.setBounds(120,260,120,27);
30 txtpass.setBounds(120,300,120,27);
31 btok.setBounds(340,260,100,28);
32 btexit.setBounds(340,300,100,28);
33 add(name);
34 add(txtname);
35 add(pass);
36 add(txtpass);
37 add(btok);
38 add(btexit);
39 setVisible(true);
40 }
41 public static void main(String args[])
42 {
43 denglu dl=new denglu();
44 }
45 }

这个是点击后进入的界面代码
01 import java.awt.*;
02 import java.awt.event.*;
03 import java.awt.geom.*;
04 import javax.swing.*;
05 import javax.swing.event.*;
06 import java.sql.*;
07 public class yonghu
08 {
09 public static void main(String args[])
10 {
11 JFrame jf=new JFrame();
12 jf.setTitle("aaa");
13 jf.setBounds(300,250,300,200);
14 jf.setVisible(true);
15 }
16 }

那出了问题？

你是要连接mysql吗，，，Class.forName("com.mysql.jdbc.Driver")

不是啊 就是点击确定能进入下一个界面 那个确定按钮的监听和数据库对比返回值验证账号密码

不太懂，帮顶下