简述：做这个系统的时候因为时间不是很多
所以调用了一些网上的界面,直接拿了过来改了下人家的JFrame
话不多说,代码如下
连接时注意jdk版本问题
一,连接与核心查询类代码
package daoru;
import java.sql.*;
import javax.swing.JOptionPane;
import javax.swing.Spring;
//数据库连接程序
public class MysqlConn {
public static String driverName="com.microsoft.sqlserver.jdbc.SQLServerDriver";
public static String dbURL="jdbc:sqlserver://127.0.0.1:1433;DatabaseName=学生成绩管理系统";
public static String userName="sa";
public static String userPwd="123456789";
//设定用户名和密码
public static String userword;
public static String pawd;
//修改或者插入学生信息类时使用的变量
public static String cname = null;
public static String cno = null;
public static String stucredit = null;
//设定学生账户的信息类
public static String stuid = null;
public static String stuname = null;
public static String stusex = null;
public static String stunj=null;
public static String stuzy=null;
//计学生人数的变量
public static int counter = 0;
//学生个人信息的
public static String [] stu_sno = new String[10];
public static String [] stu_name = new String[10];
public static String [] stu_sex = new String[10];
public static String [] stu_zy = new String[10];
public static String [] stu_nj = new String[10];
//统计分数的
public static String [] stu_kcbh = new String[10];
public static String [] stu_kcmc = new String[10];
public static double [] stu_point = new double[10];
//课程表类
public static String [] c_no = new String[10];
public static String [] ct_name = new String[10];
public static String [] c_name = new String[10];
public static String [] c_rkjs=new String[10];
public static double [] credit = new double[10];
//执行sql语句与返回sql执行结果
public static Connection conn = null;
public static PreparedStatement ps = null;
public static ResultSet rs = null;
//连接数据库
public static void ConnectSQL() {
try {
Class.forName(driverName);
conn=DriverManager.getConnection(dbURL,userName,userPwd);//即验证数据库的账号与密码进行连接
System.out.println("The SQL is connected");
} catch (Exception e) {
e.printStackTrace();
}
}
// 判断用户是否存在
//判断管理员的id是否存在
public static boolean queryadm(String id) {
// 创建火箭车
try {
ps = conn.prepareStatement("select * from gly where ID = ?");
ps.setString(1, id);
// ResultSet结果集把ResultSet理解成返回一张表行的结果集
rs = ps.executeQuery();
if (rs.next()) {//即返回一张表中的所有密码
pawd = rs.getString("password");
return true;
}
} catch (Exception e1) {
e1.printStackTrace();
}
return false;
}
//判断该学生的学号是否存在
public static boolean querystu(String id) {
try {
ps = conn.prepareStatement("select * from Student where sno = ?");
ps.setString(1, id);
rs = ps.executeQuery();
if (rs.next()) {
pawd = rs.getString("sno");
return true;
}
} catch (Exception e1) {
e1.printStackTrace();//查看错误信息的代码
}
return false;
}
public static void getdatastu() {
try {
ps = conn.prepareStatement("select * from Student");
rs = ps.executeQuery();
counter = 0;
while(rs.next())
{
stu_sno[counter] = rs.getString("sno");//学号
stu_name[counter] = rs.getString("sname");//姓名
stu_sex[counter] = rs.getString("sex");//性别-->即如果用的是String类型就不能用date类型否则会返回不了所需要的值
stu_zy[counter] = rs.getString("zy");//专业
stu_nj[counter] = rs.getString("nj");//年级
counter++;
}
} catch (Exception e1) {
e1.printStackTrace();
}
}
//获取一个学生的成绩类信息-->对接student函数
public static void getdatastu(String s) {
try {
ps = conn.prepareStatement("select * from Grade where sno = ?");
ps.setString(1, s);
rs = ps.executeQuery();
counter = 0;
while(rs.next())
{
c_name[counter] = rs.getString("sno");
stu_kcbh[counter] = rs.getString("kcbh");
stu_kcmc[counter] = rs.getString("kcmc");
stu_point[counter] = rs.getDouble("fs");
counter++;
}
} catch (Exception e1) {
e1.printStackTrace();
}
}
//获取所有学生的个人成绩信息
public static void getdatagra() {
try {
ps = conn.prepareStatement("select * from Grade where Grade.sno in (select sno from Student)");
rs = ps.executeQuery();
counter = 0;
while(rs.next())
{
c_name[counter] = rs.getString("sno");
stu_kcbh[counter] = rs.getString("kcbh");
stu_kcmc[counter] = rs.getString("kcmc");
stu_point[counter] = rs.getDouble("fs");
counter++;
}
}catch(Exception e){
e.printStackTrace();
}
}
//增加学生-->有小bug
public static void insertstu() {
try{
ps = conn.prepareStatement("insert into Student values ('"+stuid+"','"+stuname+"','"+stusex+"','"+stunj+"','"+stuzy+"')");
ps.executeUpdate();
JOptionPane.showMessageDialog(null, "学生记录添加成功!", "提示消息", JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e1) {
JOptionPane.showMessageDialog(null, "数据添加异常!", "提示消息", JOptionPane.ERROR_MESSAGE);
e1.printStackTrace();
}
}
public static void deletestu(String stuid2) {
try {
ps = conn.prepareStatement("delete from Student where sno = ? ");
ps.setString(1, stuid2);
ps.execute();
JOptionPane.showMessageDialog(null, "学生记录删除成功!", "提示消息", JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e1){
JOptionPane.showMessageDialog(null, "数据删除失败!", "提示消息", JOptionPane.ERROR_MESSAGE);
e1.printStackTrace();
}
}
public static void getdatacou() {
try {
ps = conn.prepareStatement("select * from Course ");
rs = ps.executeQuery();
counter = 0;
while(rs.next()){
c_no[counter] = rs.getString("kcbh");
c_name[counter] = rs.getString("kcm");
c_rkjs[counter] = rs.getString("rkjs");
counter++;
}
}catch (Exception e){
e.printStackTrace();
}
}
//查询课程函数对接功能实现
public static boolean querycou(String text) {
try {
ps = conn.prepareStatement("select kcbh from Course where kcbh = ?");
ps.setString(1, text);
rs = ps.executeQuery();
if(rs.next()){
return true;
}
}catch(Exception e){
e.printStackTrace();
}
return false;
}
//插入课表对接函数
public static void insertcou(String cno2, String cname2, String stucredit2) {
try{
ps = conn.prepareStatement("insert into Course values ('"+ cno2 +"','"+ cname2 +"','"+stucredit2+"')");
ps.executeUpdate();
JOptionPane.showMessageDialog(null, "课程信息添加成功!", "提示消息", JOptionPane.INFORMATION_MESSAGE);
}catch(Exception e){
e.printStackTrace();
JOptionPane.showMessageDialog(null, "课程信息添加失败!", "提示消息", JOptionPane.INFORMATION_MESSAGE);
}
}
public static void deletecou(String cno2) {
try {
ps = conn.prepareStatement("delete from Course where kcbh = ?");
ps.setString(1, cno2);
ps.execute();
JOptionPane.showMessageDialog(null, "课程删除成功!", "提示消息", JOptionPane.INFORMATION_MESSAGE);
}catch(Exception e){
e.printStackTrace();
JOptionPane.showMessageDialog(null, "课程删除失败!", "提示消息", JOptionPane.INFORMATION_MESSAGE);
}
}
public static void getdatacou(String cname2) {
try {
ps = conn.prepareStatement("select Cno from 课程 where Cname = ?");
ps.setString(1, cname2);
rs = ps.executeQuery();
if(rs.next()){
cno = rs.getString("Cno");
}
}catch (Exception e){
e.printStackTrace();
}
}
}二,界面类代码
①Admin.java管理员界面
//管理员选择学生还是课程的界面
package SMIS;
import java.awt.event.*;
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import javax.swing.GroupLayout.Alignment;
import java.awt.Font;
import ui.Login;
//查询、更新学生信息
public class Admin extends JFrame {
JButton jb1,jb2 = null;
JRadioButton jrb1,jrb2 = null;
JLabel jl = null;
JPanel jp = null;
ButtonGroup bg = null;
public Admin() {
getContentPane().setLayout(null);
jp = new JPanel();
jp.setBounds(125, 184, 386, 190);
getContentPane().add(jp);
jp.setLayout(null);
jl = new JLabel("操作对象");
jl.setBounds(29, 48, 60, 37);
jp.add(jl);
jrb1 = new JRadioButton("学生");//学生
jrb1.setBounds(118, 48, 59, 37);
jp.add(jrb1);
bg = new ButtonGroup();
bg.add(jrb1);
bg.add(jrb2);
jb1 = new JButton("确定");
jb1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
if(jrb1.isSelected()){
Stu st = new Stu();
}
else{
Cou co = new Cou();
}
}
});
jb1.setBounds(41, 109, 72, 42);
jp.add(jb1);
JButton jb2 = new JButton("退出");
jb2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
jb2.setBounds(267, 109, 76, 42);
jp.add(jb2);
JRadioButton radioButton = new JRadioButton("课程");
radioButton.setBounds(206, 48, 59, 37);
jp.add(radioButton);
bg.add(radioButton);
JButton button = new JButton("返回");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Login l = new Login();
}
});
button.setBounds(154, 109, 72, 42);
jp.add(button);
JLabel label = new JLabel("欢迎登录学生成绩管理系统！");
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 46));
label.setBounds(14, 55, 604, 60);
getContentPane().add(label);
//给窗口设置标题
this.setTitle("学生成绩管理系统-管理员");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}②COU.java
//课程界面类
package SMIS;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JPanel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import daoru.MysqlConn;
import SMIS.Admin;
import SMIS.Cou;
import gn.InsertCou;
import gn.InsertStu;
import gn.Delete;
import gn.QueryCou;
import gn.QueryStu;
import gn.JudgeNum;//统计数目功能
import SMIS.Stu;
import SMIS.Student;
public class Cou extends JFrame {
public Cou() {
getContentPane().setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(152, 59, 329, 302);
getContentPane().add(panel);
panel.setLayout(null);
JLabel label = new JLabel("请选择您要进行的操作");
label.setBounds(69, 5, 191, 41);
panel.add(label);
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JButton button = new JButton("查询课程信息");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
QueryCou qc = new QueryCou();
}
});
button.setBounds(94, 59, 140, 47);
panel.add(button);
JButton button_1 = new JButton("添加课程信息");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
InsertCou ic = new InsertCou();
}
});
button_1.setBounds(94, 119, 140, 47);
panel.add(button_1);
JButton button_3 = new JButton("删除课程信息");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Delete dc = new Delete();
}
});
button_3.setBounds(94, 182, 140, 47);
panel.add(button_3);
JButton button_4 = new JButton("返回");
button_4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Admin ad = new Admin();
}
});
button_4.setBounds(202, 389, 94, 41);
getContentPane().add(button_4);
JButton button_5 = new JButton("退出");
button_5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button_5.setBounds(345, 389, 94, 41);
getContentPane().add(button_5);
//给窗口设置标题
this.setTitle("学生信息管理系统-管理员");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}③Stu.java
//管理员管理的学生界面类
package SMIS;
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import SMIS.Admin;
import SMIS.Cou;
import gn.InsertCou;
import gn.InsertStu;
import gn.Delete;
import gn.QueryCou;
import gn.QueryStu;
import gn.JudgeNum;//统计数目功能
//查询、插入、修改、删除学生信息
public class Stu extends JFrame{
public Stu() {
getContentPane().setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(151, 27, 330, 305);
getContentPane().add(panel);
panel.setLayout(null);
JLabel label = new JLabel("请选择您要进行的操作");
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label.setBounds(69, 13, 191, 41);
panel.add(label);
JButton button = new JButton("查询学生信息");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
QueryStu qs = new QueryStu();
}
});
button.setBounds(91, 67, 143, 50);
panel.add(button);
JButton button_1 = new JButton("添加学生信息");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
InsertStu is = new InsertStu();
}
});
button_1.setBounds(91, 128, 143, 50);
panel.add(button_1);
JButton button_3 = new JButton("删除学生信息");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Delete ds = new Delete();
}
});
button_3.setBounds(91, 185, 143, 50);
panel.add(button_3);
JPanel panel_1 = new JPanel();
panel_1.setBounds(179, 367, 272, 49);
getContentPane().add(panel_1);
panel_1.setLayout(null);
JButton button_4 = new JButton("返回");
button_4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Admin ad = new Admin();
}
});
button_4.setBounds(41, 5, 76, 40);
panel_1.add(button_4);
JButton button_5 = new JButton("退出");
button_5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button_5.setBounds(146, 5, 76, 40);
panel_1.add(button_5);
//给窗口设置标题
this.setTitle("学生信息管理系统-管理员");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}④Student.java
package SMIS;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.BorderLayout;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.JLabel;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JTextArea;
import javax.swing.JFormattedTextField;
import daoru.MysqlConn;
import SMIS.Admin;
import SMIS.Cou;
import gn.InsertCou;
import gn.InsertStu;
import gn.Delete;
import gn.QueryCou;
import gn.QueryStu;
import gn.JudgeNum;//统计数目功能
import ui.Login;
public class Student extends JFrame {
private JTable table;
public Student() {
getContentPane().setLayout(null);
JButton btnNewButton = new JButton("查成绩");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MysqlConn.ConnectSQL();
MysqlConn.getdatastu(MysqlConn.userword);
for(int i = 0; i < MysqlConn.counter; i++){
table.setValueAt(MysqlConn.c_name[i], i, 0);
table.setValueAt(MysqlConn.stu_kcbh[i], i, 1);
table.setValueAt(MysqlConn.stu_kcmc[i], i, 2);
table.setValueAt(MysqlConn.stu_point[i], i, 3);
}
}
});
btnNewButton.setBounds(161, 162, 97, 37);
getContentPane().add(btnNewButton);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(39, 212, 560, 152);
getContentPane().add(scrollPane);
table = new JTable();
table.setModel(new DefaultTableModel(
new Object[][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
},
new String[] {
"学号", "课程编号", "课程名称", "分数"
}
));
table.setRowHeight(30);
scrollPane.setViewportView(table);
JButton button = new JButton("退出");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button.setBounds(383, 162, 97, 37);
getContentPane().add(button);
JLabel label_4 = new JLabel("欢迎登录学生成绩管理系统");
label_4.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 46));
label_4.setBounds(14, 29, 604, 117);
getContentPane().add(label_4);
JButton button_1 = new JButton("返回");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Login l = new Login();
}
});
button_1.setBounds(272, 162, 97, 37);
getContentPane().add(button_1);
this.setTitle("学生成绩管理系统-学生");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}三,UI界面
Login.java
//登录界面类
package ui;
import java.awt.*;//提供GUI的设计工具
import java.awt.event.*;//提供awt组件事件的监听以及相应
import javax.swing.*;//配置选定功能的实现与框架功能
import daoru.MysqlConn;
import SMIS.Admin;
import SMIS.Cou;
import gn.InsertCou;
import gn.InsertStu;
import gn.Delete;
import gn.QueryCou;
import gn.QueryStu;
import gn.JudgeNum;//统计数目功能
import SMIS.Stu;
import SMIS.Student;
public class Login extends JFrame implements ActionListener {
//定义登录界面的组件
JButton jb1,jb2,jb3=null;
JRadioButton jrb1,jrb2,jrb3=null;
JPanel jp4=null;
JTextField jtf=null;
JLabel jlb1,jlb2,jlb3=null;
JPasswordField jpf=null;
ButtonGroup bg=null;
public static void main(String[] args) {
Login ms=new Login();
}
//构造函数
public Login()
{
bg=new ButtonGroup();
jp4=new JPanel();
jp4.setBounds(0, 0, 0, 0);
getContentPane().setLayout(null);
getContentPane().add(jp4);
jlb1=new JLabel("用户名：");
jlb1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
jlb1.setBounds(181, 92, 83, 37);//x,y,width,height
getContentPane().add(jlb1);
jtf=new JTextField(12);
jtf.setBounds(265, 92, 133, 37);
getContentPane().add(jtf);
jlb2=new JLabel("密 码：");
jlb2.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
jlb2.setBounds(181, 161, 83, 37);
getContentPane().add(jlb2);
jpf = new JPasswordField(12);
jpf.setBounds(265, 161, 133, 37);
getContentPane().add(jpf);
jlb3=new JLabel("权 限：");
jlb3.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
jlb3.setBounds(181, 227, 83, 37);
getContentPane().add(jlb3);
jrb1=new JRadioButton("管理员");
jrb1.setBounds(265, 227, 73, 37);
getContentPane().add(jrb1);
bg.add(jrb1);
jrb3=new JRadioButton("学生",true);
jrb3.setBounds(349, 227, 59, 37);
getContentPane().add(jrb3);
bg.add(jrb3);
jb1=new JButton("登录");
jb1.setBounds(181, 311, 76, 40);
getContentPane().add(jb1);
jb2=new JButton("重置");
jb2.setBounds(265, 311, 76, 40);
getContentPane().add(jb2);
jb3=new JButton("退出");
jb3.setBounds(349, 311, 76, 40);
getContentPane().add(jb3);
jb3.addActionListener(this);//退出键的监听
jb2.addActionListener(this);//重置的监听
//设置监听
jb1.addActionListener(this);//登录的监听实现
//给窗口设置标题
this.setTitle("学生成绩管理系统-登录");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="退出")
{
System.exit(0);
}else if(e.getActionCommand()=="登录")
{
if(!jtf.getText().isEmpty() && !String.valueOf(jpf.getPassword()).isEmpty())
{
MysqlConn.ConnectSQL();
if(jrb1.isSelected())//选择管理员进行登录
{
if(MysqlConn.queryadm(jtf.getText()))
{
this.adminlogin();//调用这个里面的adminlogin函数
}
}else if(jrb3.isSelected())//选择学生进行登录
{
if(MysqlConn.querystu(jtf.getText()))
{
MysqlConn.userword = jtf.getText();
this.stulogin();
}
}
}else if(jtf.getText().isEmpty())//即没有输入进行输入的状况提示
{
JOptionPane.showMessageDialog(null,"请输入用户名","提示消息",JOptionPane.WARNING_MESSAGE);
this.clear();
}else if(String.valueOf(jpf.getPassword()).isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入密码","提示消息",JOptionPane.WARNING_MESSAGE);
this.clear();
}
}else if(e.getActionCommand()=="重置")
{
this.clear();
}
}
//清空文本框和密码框
public void clear()
{
jtf.setText("");
jpf.setText("");
}
//管理员登录
public void adminlogin(){
if(MysqlConn.pawd.equals(String.valueOf(jpf.getPassword())))
{
JOptionPane.showMessageDialog(null,"登录成功！","提示消息",JOptionPane.WARNING_MESSAGE);
this.clear();
//关闭当前界面
dispose();
//创建一个新界面
Admin ad=new Admin();
}else if(jtf.getText().isEmpty()&&String.valueOf(jpf.getPassword()).isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入用户名和密码！","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(jtf.getText().isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入用户名！","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(String.valueOf(jpf.getPassword()).isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入密码！","提示消息",JOptionPane.WARNING_MESSAGE);
}else
{
JOptionPane.showMessageDialog(null,"用户名或者密码错误！\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE);
//清空输入框
this.clear();
}
}
//学生登录
public void stulogin(){
if(MysqlConn.pawd.equals(String.valueOf(jpf.getPassword())))
{
JOptionPane.showMessageDialog(null,"登录成功！","提示消息",JOptionPane.WARNING_MESSAGE);
this.clear();
//关闭当前界面
dispose();
//创建一个新界面
Student stu = new Student();
}else if(jtf.getText().isEmpty()&&String.valueOf(jpf.getPassword()).isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入用户名和密码！","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(jtf.getText().isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入用户名！","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(String.valueOf(jpf.getPassword()).isEmpty())
{
JOptionPane.showMessageDialog(null,"请输入密码！","提示消息",JOptionPane.WARNING_MESSAGE);
}else
{
JOptionPane.showMessageDialog(null,"用户名或者密码错误！\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE);
//清空输入框
this.clear();
}
}
}四,功能
①Delete.java
//删除学号与课程号的类
package gn;
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import javax.swing.GroupLayout.Alignment;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import daoru.MysqlConn;
import SMIS.Stu;
import SMIS.Student;
import SMIS.Admin;
import SMIS.Cou;
public class Delete extends JFrame {
private JTextField textField;
public Delete() {
getContentPane().setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(152, 103, 321, 162);
getContentPane().add(panel);
panel.setLayout(null);
JLabel label = new JLabel("请输入要删除的学号/课程号:");
label.setBounds(0, 5, 321, 37);
panel.add(label);
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
//定义文本框类
textField = new JTextField();
textField.setBounds(72, 66, 159, 32);
panel.add(textField);
textField.setColumns(10);
//定义按钮类
JRadioButton rdbtnNewRadioButton = new JRadioButton("学生");
rdbtnNewRadioButton.setBounds(31, 107, 59, 37);
panel.add(rdbtnNewRadioButton);
ButtonGroup bg = new ButtonGroup();
JRadioButton radioButton_1 = new JRadioButton("课程");
radioButton_1.setBounds(121, 107, 59, 37);
panel.add(radioButton_1);
bg.add(radioButton_1);
JPanel panel_1 = new JPanel();
panel_1.setBounds(141, 302, 343, 52);
getContentPane().add(panel_1);
JButton button = new JButton("确定");
button.setBounds(8, 5, 76, 40);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MysqlConn.ConnectSQL();
if(textField.getText().isEmpty()){
JOptionPane.showMessageDialog(null,"请输入学号或课程号!","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(!JudgeNum.judge(textField.getText(), textField.getText().length())){
JOptionPane.showMessageDialog(null, "学号或课程号仅由数字组成，您输入的学号或课程号形式有误!\n请重新输入", "提示消息", JOptionPane.ERROR_MESSAGE);
}else if(!rdbtnNewRadioButton.isSelected()&& !radioButton_1.isSelected()){
JOptionPane.showMessageDialog(null,"请选择学生或课程!","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(rdbtnNewRadioButton.isSelected()){
if(!MysqlConn.querystu(textField.getText())){
JOptionPane.showMessageDialog(null,"您输入的学号有误!\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE);
}else{
int option = JOptionPane.showConfirmDialog(null, "您确定删除该学生吗？", "提示消息", JOptionPane.OK_CANCEL_OPTION);
if(option == JOptionPane.OK_OPTION){
MysqlConn.stuid = textField.getText();
//执行删除操作
MysqlConn.deletestu(MysqlConn.stuid);
}else {
textField.setText("");
}
}
}else{
if(!MysqlConn.querycou(textField.getText())){
JOptionPane.showMessageDialog(null,"您输入的课程号有误!\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE);
}else{
int option = JOptionPane.showConfirmDialog(null, "您确定删除该课程吗？", "提示消息", JOptionPane.OK_CANCEL_OPTION);
if(option == JOptionPane.OK_OPTION){
MysqlConn.cno = textField.getText();
MysqlConn.deletecou(MysqlConn.cno);
}else {
textField.setText("");
}
}
}
}
});
panel_1.setLayout(null);
panel_1.add(button);
JButton button_1 = new JButton("返回");
button_1.setBounds(176, 5, 76, 40);
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Admin ad = new Admin();
}
});
JButton button_2 = new JButton("重置");
button_2.setBounds(92, 5, 76, 40);
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText("");
}
});
panel_1.add(button_2);
panel_1.add(button_1);
JButton button_3 = new JButton("退出");
button_3.setBounds(260, 5, 76, 40);
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
panel_1.add(button_3);
this.setTitle("学生成绩管理系统-管理员-删除学生/课程");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}②InsertCou.java
//插入课程类
package gn;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import daoru.MysqlConn;
import SMIS.Stu;
import SMIS.Student;
import SMIS.Admin;
import SMIS.Cou;
public class InsertCou extends JFrame {
private JTextField textField;
private JTextField textField_1;
private JTextField textField_2;
public InsertCou() {
getContentPane().setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(134, 49, 379, 265);
getContentPane().add(panel);
panel.setLayout(null);
JLabel label = new JLabel("请填写您要添加的课程信息：");
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label.setBounds(79, 14, 238, 36);
panel.add(label);
JLabel label_1 = new JLabel("课程号:");
label_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label_1.setBounds(104, 76, 77, 41);
panel.add(label_1);
textField = new JTextField();
textField.setBounds(181, 80, 110, 34);
panel.add(textField);
textField.setColumns(10);
JLabel label_2 = new JLabel("课程名:");
label_2.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label_2.setBounds(105, 137, 77, 41);
panel.add(label_2);
textField_1 = new JTextField();
textField_1.setColumns(10);
textField_1.setBounds(180, 137, 110, 34);
panel.add(textField_1);
JLabel label_3 = new JLabel("任课教师:");
label_3.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label_3.setBounds(104, 199, 77, 41);
panel.add(label_3);
textField_2 = new JTextField();
textField_2.setColumns(10);
textField_2.setBounds(181, 201, 110, 34);
panel.add(textField_2);
JButton button = new JButton("确定");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MysqlConn.ConnectSQL();
if(textField.getText().isEmpty()){
JOptionPane.showMessageDialog(null,"请输入课程号!", "提示消息", JOptionPane.WARNING_MESSAGE);
}else if(!JudgeNum.judge(textField.getText(), textField.getText().length())){
JOptionPane.showMessageDialog(null,"课程号仅由数字组成，您输入的课程号形式有误!\n请重新输入", "提示消息", JOptionPane.WARNING_MESSAGE);
}else if(MysqlConn.querycou(textField.getText())){
JOptionPane.showMessageDialog(null,"该课程已存在!\n请重新输入", "提示消息", JOptionPane.WARNING_MESSAGE);
}else if(textField_1.getText().isEmpty()){
JOptionPane.showMessageDialog(null,"请输入课程名!", "提示消息", JOptionPane.WARNING_MESSAGE);
}else if(textField_2.getText().isEmpty()){
JOptionPane.showMessageDialog(null,"请输入任课教师!", "提示消息", JOptionPane.WARNING_MESSAGE);
}else{
MysqlConn.cno = textField.getText();
MysqlConn.cname = textField_1.getText();
MysqlConn.stucredit = textField_2.getText();
MysqlConn.insertcou(MysqlConn.cno,MysqlConn.cname,MysqlConn.stucredit);
}
}
});
button.setBounds(146, 345, 78, 41);
getContentPane().add(button);
JButton button_1 = new JButton("重置");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText("");
textField_1.setText("");
textField_2.setText("");
}
});
button_1.setBounds(237, 344, 78, 41);
getContentPane().add(button_1);
JButton button_2 = new JButton("返回");
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Cou co = new Cou();
}
});
button_2.setBounds(330, 344, 78, 41);
getContentPane().add(button_2);
JButton button_3 = new JButton("退出");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button_3.setBounds(423, 343, 78, 41);
getContentPane().add(button_3);
//给窗口设置标题
this.setTitle("学生成绩管理系统-管理员-添加课程信息");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}③InsertStu.java
//插入学生的类
package gn;
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.sql.Date;
import java.awt.event.ActionEvent;
import java.awt.FlowLayout;
import javax.swing.GroupLayout.Alignment;
import daoru.MysqlConn;
import SMIS.Stu;
import SMIS.Student;
import SMIS.Admin;
import SMIS.Cou;
public class InsertStu extends JFrame {
private JTextField textField;
private JTextField textField_1;
private JTextField textField_2;
private JTextField textField_3;
public InsertStu() {
getContentPane().setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(40, 12, 554, 397);
getContentPane().add(panel);
panel.setLayout(null);
JComboBox comboBox_4 = new JComboBox();
comboBox_4.setModel(new DefaultComboBoxModel(new String[] {"计算机科学与技术", "软件工程","测控技术与仪器","自动化","电子信息与工程"}));
comboBox_4.setBounds(196, 220, 200, 24);
panel.add(comboBox_4);
JLabel label_4 = new JLabel("专业:");
label_4.setBounds(137, 218, 54, 24);
panel.add(label_4);
label_4.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JLabel label = new JLabel("学号：");
label.setBounds(137, 61, 54, 24);
panel.add(label);
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JComboBox comboBox_2 = new JComboBox();//年级对应的代码
comboBox_2.setModel(new DefaultComboBoxModel(new String[] {"2020", "2019", "2018", "2017", "2016"}));
comboBox_2.setBounds(196, 176, 70, 29);
panel.add(comboBox_2);
JLabel label_3 = new JLabel("年级：");
label_3.setBounds(137, 176, 90, 24);//利用4个坐标进行控制代
panel.add(label_3);
label_3.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JRadioButton radioButton_1 = new JRadioButton("女");
radioButton_1.setBounds(270, 134, 47, 33);
panel.add(radioButton_1);
radioButton_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JRadioButton radioButton = new JRadioButton("男");
radioButton.setBounds(196, 134, 47, 33);
panel.add(radioButton);
radioButton.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
ButtonGroup bg = new ButtonGroup();
bg.add(radioButton);
bg.add(radioButton_1);
JLabel label_2 = new JLabel("性别：");
label_2.setBounds(137, 137, 54, 24);
panel.add(label_2);
label_2.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
textField_1 = new JTextField();//第一个文本框
textField_1.setBounds(196, 61, 121, 24);
panel.add(textField_1);
textField_1.setColumns(10);
JLabel label_1 = new JLabel("姓名：");
label_1.setBounds(137, 100, 54, 24);
panel.add(label_1);
label_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
textField = new JTextField();//第二个文本框
textField.setBounds(196, 99, 121, 24);
panel.add(textField);
textField.setColumns(10);
JLabel label_8 = new JLabel("请填写您要添加的学生信息：");
label_8.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label_8.setBounds(142, 18, 235, 30);
panel.add(label_8);
JPanel panel_1 = new JPanel();//
panel_1.setBounds(109, 422, 416, 37);
getContentPane().add(panel_1);
JButton button = new JButton("确定");//确定按钮
button.setBounds(51, 5, 63, 27);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MysqlConn.ConnectSQL();
if(textField_1.getText().isEmpty()){
JOptionPane.showMessageDialog(null,"请输入学号!","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(MysqlConn.querystu(textField_1.getText())){
JOptionPane.showMessageDialog(null,"该学号已存在!\n请重新输入","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(!JudgeNum.judge(textField_1.getText(), textField_1.getText().length())){
JOptionPane.showMessageDialog(null, "学号仅由数字组成，您输入的学号形式有误!\n请重新输入", "提示消息", JOptionPane.ERROR_MESSAGE);
}else if(textField.getText().isEmpty()){
JOptionPane.showMessageDialog(null,"请输入姓名!","提示消息",JOptionPane.WARNING_MESSAGE);
}else if(!radioButton.isSelected() && !radioButton_1.isSelected()){
JOptionPane.showMessageDialog(null,"请选择性别!","提示消息",JOptionPane.WARNING_MESSAGE);
}else{//获取5个文本框与下拉框中的功能,且进行插入到内容中
MysqlConn.stuid = textField_1.getText();//获取三个文本框的内容
MysqlConn.stuname = textField.getText();
if(radioButton.isSelected())
MysqlConn.stusex = "男";
else
MysqlConn.stusex = "女";
MysqlConn.stunj = (String) comboBox_2.getSelectedItem();
MysqlConn.stuzy = (String) comboBox_4.getSelectedItem();
//把学生信息插入到数据库中
MysqlConn.insertstu();
}
}
});
panel_1.setLayout(null);
panel_1.add(button);
JButton button_1 = new JButton("返回");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Stu st = new Stu();
}
});
button_1.setBounds(203, 5, 63, 27);
panel_1.add(button_1);
JButton button_2 = new JButton("退出");
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button_2.setBounds(280, 5, 63, 27);
panel_1.add(button_2);
JButton button_3 = new JButton("重置");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText("");
textField_1.setText("");
textField_2.setText("");
textField_3.setText("");
}
});
button_3.setBounds(126, 5, 63, 27);
panel_1.add(button_3);
this.setTitle("学生成绩管理系统-管理员-添加学生信息");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}④JudgeNum.java
//判断是否是数字的类-->用于课程号处
package gn;
public class JudgeNum {
public static boolean judge(String s,int len){
for(int i = 0; i < len; i++){
if(!Character.isDigit(s.charAt(i))){
return false;
}
}
return true;
}
public static boolean judge(String s){
try{
Float.valueOf(s);
return true;
}catch(Exception e){
e.printStackTrace();
}
return false;
}
}⑤QueryCou.java
//查询课程的类
package gn;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import java.awt.Font;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import daoru.MysqlConn;
import SMIS.Stu;
import SMIS.Student;
import SMIS.Admin;
import SMIS.Cou;
public class QueryCou extends JFrame {
private JTable table;
public QueryCou() {
getContentPane().setLayout(null);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(54, 148, 525, 180);
getContentPane().add(scrollPane);
table = new JTable();
table.setRowHeight(30);
table.setModel(new DefaultTableModel(
new Object[][] {
{null, null, null},
{null, null, null},
{null, null, null},
{null, null, null},
{null, null, null},
},
new String[] {
"课程号", "课程名", "任课教师"
}
));
table.getColumnModel().getColumn(0).setPreferredWidth(100);
scrollPane.setViewportView(table);
MysqlConn.ConnectSQL();
MysqlConn.getdatacou();
if(MysqlConn.counter == 0){
JOptionPane.showMessageDialog(null, "课程还未导入!", "提示消息", JOptionPane.ERROR_MESSAGE);
}
for(int i = 0; i < MysqlConn.counter; i++){
table.setValueAt(MysqlConn.c_no[i], i, 0);
table.setValueAt(MysqlConn.c_name[i], i, 1);
table.setValueAt(MysqlConn.c_rkjs[i], i, 2);
}
JLabel label = new JLabel("所有课程信息如下：");
label.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
label.setBounds(235, 76, 164, 45);
getContentPane().add(label);
JButton button = new JButton("返回");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Cou co = new Cou();
}
});
button.setBounds(199, 367, 89, 36);
getContentPane().add(button);
JButton button_1 = new JButton("退出");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button_1.setBounds(362, 367, 89, 36);
getContentPane().add(button_1);
//给窗口设置标题
this.setTitle("学生成绩管理系统-管理员-查询课程信息");
//设置窗体大小
this.setSize(650,520);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}⑥Query.java
//查询学生成绩与学生信息的类
package gn;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import daoru.MysqlConn;
import SMIS.Stu;
import SMIS.Student;
import SMIS.Admin;
import SMIS.Cou;
public class QueryStu extends JFrame{
private JTable table;
private JTable table_1;
public QueryStu() {
getContentPane().setLayout(null);
JPanel panel_1 = new JPanel();
panel_1.setBounds(0, 34, 882, 226);
getContentPane().add(panel_1);
panel_1.setLayout(null);
JLabel label_1 = new JLabel("所有学生个人信息");
label_1.setBounds(365, 15, 151, 24);
panel_1.add(label_1);
label_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(0, 52, 882, 152);
panel_1.add(scrollPane);
table = new JTable();
table.setRowHeight(30);
scrollPane.setViewportView(table);
table.setModel(new DefaultTableModel(
new Object[][] {
{null, null, null, null, null, null, null, null},
{null, null, null, null, null, null, null, null},
{null, null, null, null, null, null, null, null},
{null, null, null, null, null, null, null, null},
},
new String[] {
"学号", "姓名", "性别", "专业", "年级","","",""
}
));
table.getColumnModel().getColumn(5).setPreferredWidth(100);
JPanel panel_2 = new JPanel();
panel_2.setBounds(156, 286, 642, 295);
getContentPane().add(panel_2);
panel_2.setLayout(null);
JScrollPane scrollPane_1 = new JScrollPane();
scrollPane_1.setBounds(0, 37, 642, 242);
panel_2.add(scrollPane_1);
table_1 = new JTable();
table_1.setRowHeight(30);
scrollPane_1.setViewportView(table_1);
table_1.setModel(new DefaultTableModel(
new Object[][] {
{null, null, null, null, null, null},
{null, null, null, null, null, null},
{null, null, null, null, null, null},
{null, null, null, null, null, null},
{null, null, null, null, null, null},
{null, null, null, null, null, null},
{null, null, null, null, null, null},
},
new String[] {
"学号", "课程编号", "课程名称", "分数", "", ""
}
));
MysqlConn.ConnectSQL();
MysqlConn.getdatastu();//调用读取学生信息的函数
if(MysqlConn.counter == 0){
JOptionPane.showMessageDialog(null, "学生信息还未导入!", "提示消息", JOptionPane.ERROR_MESSAGE);
}
//返回学生信息的所有信息
for(int i = 0; i < MysqlConn.counter; i++){
table.setValueAt(MysqlConn.stu_sno[i], i, 0);
table.setValueAt(MysqlConn.stu_name[i], i, 1);
table.setValueAt(MysqlConn.stu_sex[i], i, 2);
table.setValueAt(MysqlConn.stu_zy[i], i, 3);
table.setValueAt(MysqlConn.stu_nj[i], i, 4);
}
MysqlConn.getdatagra();
if(MysqlConn.counter == 0){
JOptionPane.showMessageDialog(null, "学生成绩还未导入!", "提示消息", JOptionPane.ERROR_MESSAGE);
}
for(int i = 0; i < MysqlConn.counter; i++){
table_1.setValueAt(MysqlConn.c_name[i], i, 0);
table_1.setValueAt(MysqlConn.stu_kcbh[i], i, 1);
table_1.setValueAt(MysqlConn.stu_kcmc[i], i, 2);
table_1.setValueAt(MysqlConn.stu_point[i], i, 3);
}
JLabel label_2 = new JLabel("所有学生成绩信息");
label_2.setBounds(201, 0, 167, 34);
panel_2.add(label_2);
label_2.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 18));
JButton button = new JButton("返回");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
Stu st = new Stu();
}
});
button.setBounds(329, 603, 85, 37);
getContentPane().add(button);
JButton button_1 = new JButton("退出");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
button_1.setBounds(520, 603, 85, 37);
getContentPane().add(button_1);
this.setTitle("学生成绩管理系统-管理员-查询学生信息");
//设置窗体大小
this.setSize(900,700);
//设置窗体初始位置
this.setLocation(200, 150);
//设置当关闭窗口时，保证JVM也退出
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//显示窗体
this.setVisible(true);
//窗体大小可变
this.setResizable(true);
}
}最终界面类
①登录界面
②
其余类就不完全演示了
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