🔍 🔎 本期带领大家一起来学习java课程设计(学生信息管理系统设计)+数据库的实现思路 🔍 🔎
文章目录
- 题目要求+数据库🌍
- 一 、环境搭建🌍
- 二 、功能实现 🌎 🌍
- 1.学生信息类的创建✅
- 2.学生信息的添加功能✅✅
- 3.学生信息的删除功能✅✅✅
- 4.学生信息的修改功能 ✅✅✅✅
- 5.学生信息的查看功能✅✅✅✅✅
- 三、主类的调用🌍 🌎 🌏
- 1、 登录界面🛸
- 2、 界面搭建🛸🛸
- 四、 Extents的相关善后操作🌎 🌏 🌎 🌏
- 五、 数据库的连接🌍 🌎🌏 🌍 🌎 🌏
- 六 、感谢与交流🌍 🌎 🌏 🌍 🌎 🌏
题目要求+数据库🌍
学生信息包括:学号,姓名,年龄,性别,出生年月,地址,电话,E-mail等。试设计学生信息管理系统,使之能提供以下功能:
1、系统以菜单方式工作
2、学生信息录入功能--输入
3、学生信息浏览功能--输出
4、学生信息查询功能--算法
按学号查询
按姓名查询
5、学生信息的删除与修改(可选项)
一 、环境搭建🌍
在idea创建一个工程文件,在工程文件下创建一个model模块,在model模块下创建一个classSystem包,然后再存放对应的类,如下图所示
需要注意是因为连接了数据库,所以需要导入相应的jar包
二 、功能实现 🌎 🌍
1.学生信息类的创建✅
首先实现这个学生信息管理系统,我们需要先创建一个学生信息类
,包括学生的学号,姓名,年龄,地址,电话,邮箱,出生日期,具体代码如下✈️ 🛫 🛬
package classSystem; public class Student { private int stuId; private String name; private int age; private String sex; private String birth; private String address; private String tel; private String Email; public Student() { } public Student(int stuId, String name, int age, String sex, String birth, String address, String tel, String email) { this.stuId = stuId; this.name = name; this.age = age; this.sex = sex; this.birth = birth; this.address = address; this.tel = tel; Email = email; } public int getStuId() { return stuId; } public void setStuId(int stuId) { this.stuId = stuId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getBirth() { return birth; } public void setBirth(String birth) { this.birth = birth; } public String getTel() { return tel; } public void setTel(String tel) { this.tel = tel; } public String getEmail() { return Email; } public void setEmail(String email) { Email = email; } }
2.学生信息的添加功能✅✅
🔍 🔎因为这个学生信息管理系统的java程序是连接了数据库,所以我们在录入我们的信息的时候,需要讲我们所录入的学生信息存放到数据库当中,所以我们需要运用到sql语句
去添加我们所录入的信息,做到了随时随地可以查询,更好地管理我们的学生信息🔍 🔎
public static void addStu(ArrayList
stu) throws AWTException { while (true) { Extents.clearConsole(); System.out.println(">首界面>功能界面>添加学生信息\n\n"); Scanner sc = new Scanner(System.in); System.out.print("请输入学生学号(例:2022): "); int stuId=sc.nextInt(); System.out.print("请输入学生姓名(例:张三): "); String name = sc.next(); System.out.print("请输入学生年龄(例:18): "); int age = sc.nextInt(); System.out.print("请输入学生性别(例:男): "); String sex =sc.next(); System.out.print("请输入学生出生日期(例:2004-6-1): "); String birth =sc.next(); System.out.print("请输入学生电话(例:123456): "); String tel=sc.next(); System.out.print("请输入学生email(例:123456@qq.com): "); String emial =sc.next(); System.out.print("请输入学生地址(例:深圳): "); String address = sc.next(); System.out.println("\n\n-----------------------------------------------------"); System.out.println( "\t\t学号: "+stuId+"\t\t姓名: " + name + "\t\t年龄: " + age + "\t\t地址: " + address +"\t\t性别: " +sex+"\t\t出生日期: " +birth+"\t\t地址: " +address+"\t\t电话: " +tel+"\t\t邮箱: " +emial); System.out.print("\n\n是否添加该学生信息? [Yes(1) / No(0)] :"); Extents.isAdd(stu, sc, stuId,sex,birth,tel,emial, name, age, address); System.out.println("\n\n\n>首界面>功能界面>添加学生信息\n"); System.out.println("\t 继续添加 请输入1 "); System.out.println(); System.out.println("\t 返回上级 请输入0 "); System.out.println("\t ---------------------------------------------------------------"); System.out.print("\n请输入您的选择:"); while (true) { int choose = sc.nextInt(); if (choose == 1) { break; } else if (choose == 0) { Extents.clearConsole(); return; } else { System.out.print("看清选项! 再给你一次机会: "); } } } } public static void isAdd(ArrayList
stu, Scanner sc,int stuId ,String sex,String birth,String tel,String email, String name, int age, String address) throws AWTException { while (true) { int is = sc.nextInt(); if (is == 0) { Extents.clearConsole(); System.out.println("取消成功!"); break; } else if (is == 1) { /*Student s = new Student(stuId,name, age,sex,birth, address,tel,email); stu.add(s);*/ Connection connection =null; String sql ="insert into Student values(?,?,?,?,?,?,?,?)"; PreparedStatement preparedStatement=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); preparedStatement.setInt(1,stuId); preparedStatement.setString(2,name); preparedStatement.setInt(3,age); preparedStatement.setString(4,sex); preparedStatement.setString(5,address); preparedStatement.setString(6,birth); preparedStatement.setString(7,tel); preparedStatement.setString(8,email); //执行 preparedStatement.executeUpdate(); } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(null,preparedStatement,connection); } stuId += 1; Extents.clearConsole(); System.out.println("添加信息成功!\n\n"); FunctionalBlock.showStu(stu); break; } System.out.print("\n输入错误!请重新输入:"); } } 相信大家看到这里会有点迷惑,那么现在我来梳理一下增加信息代码块的实现逻辑
首先我们先在FunctionalBlock当中的addStudan当中录入我们的信息🔑 🔑
然后再调用我们Extens当中的isAdd判断是否录入我们的信息
如果录入信息的话,使用sql语句进行与数据库的连接,并且将信息录入到数据库当中
并且会查询数据库当中的信息🔍 🔎
如果不录入信息的话,那么就取消录入
增加学生信息效果图如下
3.学生信息的删除功能✅✅✅
学生信息的删除功能的实现,先调用FunctionalBlock
当中的showStu的方法展示全部学生的信息💡💡
再选择需要删除的学生信息💡💡
同样先要判断所输入的学号是=是否存在,用到了Extents当中的getFlag的方法
如果不存在,则返回-1,存在的话则进行删除操作
同样用到了sql语句与数据库当中的学生信息进行了交互🔑
public static void deleteStu(ArrayList
stu) throws AWTException { Scanner sc = new Scanner(System.in); showStu(stu); while (true) { System.out.print("\n请输入要删除的学生学号:"); int sid = sc.nextInt(); sc.nextLine(); int flag = Extents.getFlag(stu, sid); if (flag == -1) { System.out.print("\n该学号不存在,请重新输入\n"); } else { System.out.print("\n是否删除学号为:" + sid + " 的学生信息? [Yes(1) / No(0)] :"); Extents.isDlete(stu, sc, flag); System.out.println("\n\n\n>首界面>功能界面>删除学生信息\n"); System.out.println("\t 继续删除 请输入1 "); System.out.println(); System.out.println("\t 返回上级 请输入0 "); System.out.println("\t ----------------------------------------------------------------"); System.out.print("\n请输入您的选择: "); while (true) { int choose = sc.nextInt(); if (choose == 1) { break; } else if (choose == 0) { Extents.clearConsole(); return; } else { System.out.print("看清选项! 再给你一次机会: "); } } } } } 删除学生信息效果图如下
4.学生信息的修改功能 ✅✅✅✅
修改学生信息的功能呢,和上面删除学生信息 功能的实现类似,我们同样来看看如何实现的
学生信息的修改功能的实现,先调用FunctionalBlock当中的showStu的方法展示全部学生的信息
再选择需要修改的学生学号⌛️ ⏳⌛️ ⏳
同样先要判断所输入的学号是=是否存在,用到了Extents当中的getFlag的方法
如果不存在,则返回-1,存在的话则进行修改操作
再然后输入修改之后的学生信息💡💡
同样用到了sql语句与数据库当中的学生信息进行了交互
public static void updateStu(ArrayList
stu) throws AWTException { Scanner sc = new Scanner(System.in); while (true) { showStu(stu); System.out.print("\n\n请输入要修改信息的学生学号:"); int sidUpdate = sc.nextInt(); int flag = Extents.getFlag(stu, sidUpdate); Extents.clearConsole(); if (flag == -1) { System.out.print("该学号不存在,请重新输入\n\n\n "); } else { System.out.println(">首界面>功能界面>修改学生信息\n\n"); System.out.print("请输入学生学号(例:2022: "); int id=sc.nextInt(); System.out.print("请输入学生姓名(例:张三): "); String name = sc.next(); System.out.print("请输入学生年龄(例:18): "); int age = sc.nextInt(); System.out.print("请输入学生性别(例:男): "); String sex =sc.next(); System.out.print("请输入学生出生日期(例:2004-6-1): "); String birth =sc.next(); System.out.print("请输入学生电话(例:123456): "); String tel=sc.next(); System.out.print("请输入学生email(例:123456@qq.com): "); String emial =sc.next(); System.out.print("请输入学生地址(例:深圳): "); String address = sc.next(); Extents.clearConsole(); Extents.getFlag(stu, sidUpdate); Connection connection =null; String sql ="update Student set stuId=? ,name=?,age=?,sex=?,adress=?,birth=?,tel=?,Email=?where stuId=?"; PreparedStatement preparedStatement=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); preparedStatement.setInt(1,id); preparedStatement.setString(2,name); preparedStatement.setInt(3,age); preparedStatement.setString(4,sex); preparedStatement.setString(5,address); preparedStatement.setString(6,birth); preparedStatement.setString(7,tel); preparedStatement.setString(8,emial); preparedStatement.setInt(9,flag); //执行 preparedStatement.executeUpdate(); } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(null,preparedStatement,connection); } System.out.println(">首界面>功能界面>修改学生信息"); System.out.println("\n\n------------------------------------------------------------------"); System.out.println("修改后——>\n"); System.out.println( "\t\t姓名: " + name + "\t\t年龄: " + age + "\t\t地址: " + address +"\t\t性别: " +sex+"\t\t出生日期: " +birth+"\t\t地址: " +address+"\t\t电话: " +tel+"\t\t邮箱: " +emial); System.out.print("\n\n是否修改该学生信息? [Yes(1) / No(0)] :"); Extents.isUpdata(stu, sc, sidUpdate, flag,sex,birth,tel,emial, name, age, address); System.out.println("\n\n\n>首界面>功能界面>修改学生信息\n"); System.out.println("\t 继续修改 请输入1 "); System.out.println(); System.out.println("\t 返回上级 请输入0 "); System.out.println("\t --------------------------------------------------------------"); System.out.print("\n请输入您的选择:"); while (true) { int choose = sc.nextInt(); if (choose == 1) { Extents.clearConsole(); break; } else if (choose == 0) { Extents.clearConsole(); return; } else { System.out.print("看清选项! 再给你一次机会: "); } } } } } 修改学生信息效果图如下
5.学生信息的查看功能✅✅✅✅✅
由于查看学生信息的功能在前面三个功能当中都有调用⌛️ ⏳⌛️ ⏳
所以我们为了使得代码更加简洁,将查询学生信息的功能封装起来了
避免了代码的冗余
同样我们来看看到底是如何实现的
因为我们的程序是连接了数据库,所以我们需要查询学生的信息的时候⌛️ ⏳⌛️ ⏳
需要用到查询的sql语句进行查询,同我们的数据库进行交互
public static void showStu(ArrayList
stu) { System.out.println("1.按学号查询"); System.out.println("2.按姓名查询"); System.out.println("3.查询全部 "); Scanner sc =new Scanner(System.in); int input=sc.nextInt(); if(input==1){ System.out.print("输入需要查询的学生学号:"); int stuid=sc.nextInt(); Connection connection =null; String sql="select stuId,name,age,sex,adress,birth,tel,Email from Student where stuId=?"; PreparedStatement preparedStatement=null; ResultSet set=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); preparedStatement.setInt(1,stuid); //执行 set = preparedStatement.executeQuery(); while(set.next()){ int id=set.getInt("stuId"); String name=set.getString("name"); int age =set.getInt("age"); String sex =set.getString("sex"); String address=set.getString("adress"); String birth=set.getString("birth"); String tel=set.getString("tel"); String email=set.getString("Email"); System.out.println("\t\t" + id + " \t\t\t" + name + " \t\t\t" + age + " \t\t\t" + sex +" \t\t\t" + address + " \t\t\t" + birth+ " \t\t\t" + tel +" \t\t\t" + email + " \t\t\t" + "\n"); } } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(set,preparedStatement,connection); } } else if (input==2) { System.out.print("输入需要查询的学生名字:"); String stuname=sc.next(); Connection connection =null; String sql="select stuId,name,age,sex,adress,birth,tel,Email from Student where name=?"; PreparedStatement preparedStatement=null; ResultSet set=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); preparedStatement.setString(1,stuname); //执行 set = preparedStatement.executeQuery(); while(set.next()){ int id=set.getInt("stuId"); String name=set.getString("name"); int age =set.getInt("age"); String sex =set.getString("sex"); String address=set.getString("adress"); String birth=set.getString("birth"); String tel=set.getString("tel"); String email=set.getString("Email"); System.out.println("\t\t" + id + " \t\t\t" + name + " \t\t\t" + age + " \t\t\t" + sex +" \t\t\t" + address + " \t\t\t" + birth+ " \t\t\t" + tel +" \t\t\t" + email + " \t\t\t" + "\n"); } } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(set,preparedStatement,connection); } }else{ System.out.println(">学生信息显示\n"); System.out.println("\t --------------------------------------------------------------------------------------------------------"); System.out.println("\t 学号\t\t" + " 姓名\t\t" + " \t年龄\t" + "\t\t性别" + " \t\t\t地址"+ " \t\t\t出生日期"+" \t\t\t电话"+" \t\t\t邮箱" ); System.out.println("\t ------------------------------------------------------------------------------------------------------"); Connection connection =null; String sql="select * from Student"; PreparedStatement preparedStatement=null; ResultSet set=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); //执行 set = preparedStatement.executeQuery(); while(set.next()){ int id=set.getInt("stuId"); String name=set.getString("name"); int age =set.getInt("age"); String sex =set.getString("sex"); String address=set.getString("adress"); String birth=set.getString("birth"); String tel=set.getString("tel"); String email=set.getString("Email"); System.out.println("\t\t" + id + " \t\t\t" + name + " \t\t\t" + age + " \t\t\t" + sex +" \t\t\t" + address + " \t\t\t" + birth+ " \t\t\t" + tel +" \t\t\t" + email + " \t\t\t" + "\n"); } } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(set,preparedStatement,connection); } System.out.println("\t ------------------------------------" + "------------------------------------------------------------------"); } } 查询学生信息效果图如下
三、主类的调用🌍 🌎 🌏
1、 登录界面🛸
首先出现登陆的界面,我们需要输入我们的用户名和密码,然后判断是否正确
正确的话则执行下一步操作🍗 🍖 🦴
public static void interFace() throws AWTException { System.out.println(">首界面\n"); System.out.println("\t*****************************************************************"); System.out.println("\t 首界面 "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t 开始登录 请输入1 "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t 退出 请输入0 "); System.out.println("\t*****************************************************************"); Scanner sc = new Scanner(System.in); System.out.print("\n请输入您的选择: "); while (true) { int choose = sc.nextInt(); if (choose == 1) { register(); break; } else if (choose == 0) { System.out.println("退出成功!"); System.exit(0); } else { System.out.print("看清选项! 再给你一次机会:"); } } }
public static void register() throws AWTException { for (int i = COUNT; i >= 0; i--) { Scanner sc = new Scanner(System.in); System.out.print("请输入您的用户名: "); String loginSid = sc.nextLine(); System.out.print("请输入您的密码: "); String loginPassWd = sc.nextLine(); if (loginSid.equals(MYSID) && loginPassWd.equals(MYPASSWD)) { Extents.clearConsole(); System.out.println("欢迎登录! 用户:" + MYSID + "\n\n"); menu(); break; } else { if (i == 0) { System.out.println("你是不是傻!"); System.exit(0); } System.out.println("错了错了, 你还有 " + i + " 次机会"); } } }
2、 界面搭建🛸🛸
public static void menu() throws AWTException { ArrayList
stu = new ArrayList<>(); while (true) { System.out.println(">首界面>功能界面\n"); System.out.println("\t*****************************************************************"); System.out.println("\t 欢迎来到学生管理系统! "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t 1.添加学生信息 "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t 2.删除学生信息 "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t 3.修改学生信息 "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t 4.查看学生信息 "); System.out.println("\t ---------------------------------------------------------------"); System.out.println("\t q:返回上级菜单 p:退出管理系统 "); System.out.println("\t******************************************************************"); Scanner sc = new Scanner(System.in); System.out.print("\n请输入您的选择:"); String choose = sc.nextLine(); switch (choose) { case "1": FunctionalBlock.addStu(stu); break; case "2": Extents.clearConsole(); FunctionalBlock.deleteStu(stu); break; case "3": Extents.clearConsole(); FunctionalBlock.updateStu(stu); break; case "4": Extents.clearConsole(); FunctionalBlock.showStu(stu); Extents.isShow(sc); break; case "q": Extents.clearConsole(); interFace(); return; case "p": System.out.println("退出成功!"); System.exit(0); default: Extents.clearConsole(); System.out.println("这都错!看清选项再选\n\n\n"); break; } } } 四、 Extents的相关善后操作🌎 🌏 🌎 🌏
Extents是完成相关的善后操作,是对FunctionalBlock里面功能实现的相关善后的操作
目的是为了使得更加程序逻辑清晰🍗 🍖 🦴
package classSystem; import java.awt.*; import java.awt.event.KeyEvent; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.Scanner; public class Extents { public static void isAdd(ArrayList
stu, Scanner sc,int stuId ,String sex,String birth,String tel,String email, String name, int age, String address) throws AWTException { while (true) { int is = sc.nextInt(); if (is == 0) { Extents.clearConsole(); System.out.println("取消成功!"); break; } else if (is == 1) { /*Student s = new Student(stuId,name, age,sex,birth, address,tel,email); stu.add(s);*/ Connection connection =null; String sql ="insert into Student values(?,?,?,?,?,?,?,?)"; PreparedStatement preparedStatement=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); preparedStatement.setInt(1,stuId); preparedStatement.setString(2,name); preparedStatement.setInt(3,age); preparedStatement.setString(4,sex); preparedStatement.setString(5,address); preparedStatement.setString(6,birth); preparedStatement.setString(7,tel); preparedStatement.setString(8,email); //执行 preparedStatement.executeUpdate(); } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(null,preparedStatement,connection); } stuId += 1; Extents.clearConsole(); System.out.println("添加信息成功!\n\n"); FunctionalBlock.showStu(stu); break; } System.out.print("\n输入错误!请重新输入:"); } } public static void isDlete(ArrayList stu, Scanner sc, int flag) throws AWTException { while (true) { int is = sc.nextInt(); if (is == 0) { Extents.clearConsole(); System.out.println("取消成功!"); break; } else if (is == 1) { Connection connection =null; String sql ="delete from Student where stuId=?"; PreparedStatement preparedStatement=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); preparedStatement.setInt(1,flag); //执行 preparedStatement.executeUpdate(); } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(null,preparedStatement,connection); } Extents.clearConsole(); System.out.println("删除学生信息成功!\n\n"); FunctionalBlock.showStu(stu); break; } System.out.print("\n输入错误!请重新输入:"); } } public static void isUpdata(ArrayList stu, Scanner sc, int sidUpdate, int flag, String sex,String birth,String tel,String email, String name, int age, String address) throws AWTException { while (true) { int is = sc.nextInt(); if (is == 0) { Extents.clearConsole(); System.out.println("取消成功!"); break; } else if (is == 1) { Student newStu = new Student(sidUpdate, name,age,sex,birth,address, tel,email); Extents.clearConsole(); System.out.println("修改学生信息成功!\n\n"); FunctionalBlock.showStu(stu); break; } System.out.print("\n输入错误!请重新输入:"); } } public static void isShow(Scanner sc) throws AWTException { System.out.println("\n\n\n>首界面>功能界面>查看学生信息\n\n"); System.out.println("\t 返回上级 请输入0 "); System.out.println("\t ---------------------------------------------------------------"); System.out.print("\n请输入您的选择: "); while (true) { int choose1 = sc.nextInt(); if (choose1 == 0) { Extents.clearConsole(); break; } else { System.out.print("看清选项! 再给你一次机会: "); } } } public static int getFlag(ArrayList stu, int sid) { Connection connection =null; String sql="select * from Student"; PreparedStatement preparedStatement=null; ResultSet set=null; try { connection = jdbcUtiles.getConnection(); preparedStatement = connection.prepareStatement(sql); //执行 set = preparedStatement.executeQuery(); while(set.next()){ int id =set.getInt("stuId"); if(sid==id){ return id; } } return -1; } catch (SQLException e) { throw new RuntimeException(e); }finally { jdbcUtiles.close(set,preparedStatement,connection); } } public static void clearConsole() throws AWTException { Robot r = new Robot(); // 按下Ctrl键 r.keyPress(KeyEvent.VK_CONTROL); // 按下R键 r.keyPress(KeyEvent.VK_R); // 释放R键 r.keyRelease(KeyEvent.VK_R); // 释放Ctrl键 r.keyRelease(KeyEvent.VK_CONTROL); r.delay(50); } } 五、 数据库的连接🌍 🌎🌏 🌍 🌎 🌏
毕竟我们的这个项目是要连接到数据库当中的
🚴🏼♂️ 🚵🏼♀️所以我们需要手动操作完成数据库连接的相关代码 🚴🏼♂️ 🚵🏼♀️
package classSystem; import java.io.FileInputStream; import java.io.IOException; import java.sql.*; import java.util.Properties; public class jdbcUtiles { //工具类,连接mysql的连接和关闭 private static String user; private static String password; private static String url; private static String driver; static { Properties properties =new Properties(); try { properties.load(new FileInputStream("src\\mysql.properties")); //读取相关属性 user=properties.getProperty("uesr"); password =properties.getProperty("password"); url=properties.getProperty("url"); driver = properties.getProperty("driver"); } catch (IOException e) { throw new RuntimeException(e); } } //连接数据库 public static Connection getConnection(){ try { return DriverManager.getConnection(url,user,password); } catch (SQLException e) { throw new RuntimeException(e); } } //关闭相关资源 public static void close(ResultSet set, PreparedStatement preparedStatement,Connection connection){ try { if(set!=null){ set.close(); } if(preparedStatement!=null){ preparedStatement.close(); } if(connection!=null){ connection.close(); } } catch (SQLException e) { throw new RuntimeException(e); } } }
六 、感谢与交流🌍 🌎 🌏 🌍 🌎 🌏
🌹🌹🌹如果大家通过本篇博客收获了,对通过ava实现学生课程管理系统(数据库)
有了更好的了解的话
那么希望支持一下哦如果还有不明白的,疑惑的话,或者什么比较好的建议的话,可以发到评论区,
我们一起解决,共同进步 ❗️❗️❗️
最后谢谢大家❗️❗️❗️💯💯💯
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