Question

SQL+JAVA做一个学生管理系统

Answer 1

package t10;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Demo2 extends JFrame implements ActionListener{
Container contentPane;
JPanel pane = new JPanel();

JLabel lblName = new JLabel("账 号：");
JLabel lblPwd = new JLabel("密 码：");

JTextField txtName = new JTextField(15);
JPasswordField txtPwd = new JPasswordField(15);

JButton btnOk = new JButton("登录");
JButton btnCan = new JButton("取消");
JButton btnAdd = new JButton("注册");

Demo2(){
contentPane = this.getContentPane();

pane.add(lblName);
pane.add(txtName);

pane.add(lblPwd);
pane.add(txtPwd);

pane.add(btnOk);
pane.add(btnCan);
pane.add(btnAdd);

btnOk.addActionListener(this);
btnAdd.addActionListener(this);

contentPane.add(pane);
this.setSize(260,150);
this.setVisible(true);
this.setResizable(false);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public void actionPerformed(ActionEvent e){
String name = txtName.getText();
String pwd = new String(txtPwd.getPassword());

if(e.getSource().equals(btnOk)){
if(name.equals("")){
JOptionPane.showMessageDialog(null, "用户名不能为空！！！");
}else{
Demo1 d = new Demo1();
d.rs = d.select(name, pwd);
try{
if(d.rs.next()){
JOptionPane.showMessageDialog(null, "登录成功！！");
}
else{
JOptionPane.showMessageDialog(null, "用户名或密码错误！！！");
}
}catch(Exception ee){
System.out.println(ee.getMessage());
}finally{
d.close();
}
}
}else if(e.getSource().equals(btnAdd)){
Demo1 d = new Demo1();
boolean b = d.add(11, name, pwd);
if(!b){
JOptionPane.showMessageDialog(null, name + "用户名注册成功！！！");
}
d.close();
}
}
public static void main(String args[]){
new Demo2();
}
}

Answer 2

我有实现你所说功能的源代
有兴趣 加我 可以Q币交易

Answer 3

JAVA用eclips还是jbuilder ,sql用sql2000还是sql2005都没说清楚么

Answer 4

整个工程和数据库已经发送到你的邮箱中 请你查收