成绩管理代码java java编写学生成绩管理的代码

求用Java编写的学生成绩管理系统的完整代码

package jdbcproj;

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import java.sql.*;

import java.awt.BorderLayout;

import java.awt.EventQueue;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.border.EmptyBorder;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JTextField;

import javax.swing.JButton;

import java.awt.event.ActionListener;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.SQLException;

import java.awt.event.ActionEvent;

public class MainFrame extends JFrame {

private JPanel contentPane;

private JTextField txtname;

private JTextField txtpassword;

/**

 * Launch the application.

 */

public static void main(String[] args) {

EventQueue.invokeLater(new Runnable() {

public void run() {

try {

MainFrame frame = new MainFrame();

frame.setVisible(true);

} catch (Exception e) {

e.printStackTrace();

}

}

});

}

/**

 * Create the frame.

 */

public MainFrame() {

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setBounds(100, 100, 661, 399);

contentPane = new JPanel();

contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

setContentPane(contentPane);

contentPane.setLayout(null);

JLabel lblNewLabel = new JLabel("\u7528\u6237\u540D");

lblNewLabel.setBounds(114, 51, 72, 18);

contentPane.add(lblNewLabel);

JLabel lblNewLabel_1 = new JLabel("\u5BC6\u7801");

lblNewLabel_1.setBounds(114, 106, 72, 18);

contentPane.add(lblNewLabel_1);

txtname = new JTextField();

txtname.setBounds(261, 48, 86, 24);

contentPane.add(txtname);

txtname.setColumns(10);

txtpassword = new JTextField();

txtpassword.setBounds(261, 103, 86, 24);

contentPane.add(txtpassword);

txtpassword.setColumns(10);

JButton btnadd = new JButton("\u589E\u52A0");

btnadd.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

if(txtname.getText().equals("")||txtpassword.getText().equals(""))

{

JOptionPane.showMessageDialog(getContentPane(), "用户名和密码不能为空","提示信息框",JOptionPane.WARNING_MESSAGE);

}

else{

Users u=new Users();

u.setPwd(txtpassword.getText());

u.setUsername(txtname.getText());

UserDAO usdo=new UserDAO();

usdo.addUser(u);

}

}

});

btnadd.setBounds(45, 205, 113, 27);

contentPane.add(btnadd);

JButton btndelete = new JButton("\u5220\u9664");

btndelete.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {

if(txtname.getText().equals(""))

{

JOptionPane.showMessageDialog(getContentPane(), "用户名不能为空","提示信息框",JOptionPane.WARNING_MESSAGE);

}

else{

UserDAO usdo=new UserDAO();

usdo.delUser(txtname.getText());;

}

}

});

btndelete.setBounds(172, 205, 113, 27);

contentPane.add(btndelete);

JButton btnupdate = new JButton("\u4FEE\u6539");

btnupdate.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

if(txtname.getText().equals("")||txtpassword.getText().equals(""))

{

JOptionPane.showMessageDialog(getContentPane(), "用户名和密码不能为空","提示信息框",JOptionPane.WARNING_MESSAGE);

}

else{

Users u=new Users();

u.setPwd(txtpassword.getText());

u.setUsername(txtname.getText());

UserDAO usdo=new UserDAO();

usdo.updateUser(u);;

}

}

});

btnupdate.setBounds(300, 205, 113, 27);

contentPane.add(btnupdate);

JButton btnfind = new JButton("\u67E5\u8BE2");

btnfind.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

if(txtname.getText().equals(""))

{

JOptionPane.showMessageDialog(getContentPane(), "用户名不能为空","提示信息框",JOptionPane.WARNING_MESSAGE);

}

else{

Users u=new Users();

UserDAO usdo=new UserDAO();

u=usdo.findUser(txtname.getText(), txtpassword.getText());

if(u!=null){

JOptionPane.showMessageDialog(getContentPane(), "该用户存在！","提示信息框",JOptionPane.WARNING_MESSAGE);

}

else{

JOptionPane.showMessageDialog(getContentPane(), "该用户不存在！","提示信息框",JOptionPane.WARNING_MESSAGE);

}

}

}

});

btnfind.setBounds(427, 205, 113, 27);

contentPane.add(btnfind);

//记得要写这个

setVisible(true);

}

}

如何用Java语言编写学生成绩管理系统

package student;

import java.util.Scanner;

public class teststudent {

public static void main(String args[]){

System.out.println("************************学生成绩管理系统*********************");

System.out.println("请输入要管理的学生人数:");

Scanner sc = new Scanner(System.in);

int n = sc.nextInt();

studentMassage stum = new studentMassage(n);

int flag = 1;

while(flag == 1){

System.out.println("1.输入学生信息");

System.out.println("2.通过姓名查找学生信息");

System.out.println("3.显示全部学生信息");

System.out.println("4.退出系统");

int op = sc.nextInt();

switch(op){

case 1:stum.addStudent(n);

new Scanner(System.in).nextLine();

break;

case 2:

System.out.println("输入学生姓名：");

String name = sc.next();

stum.FindStudent(name);

new Scanner(System.in).nextLine();

break;

case 3:

stum.showallStudent();

new Scanner(System.in).nextLine();

break;

case 4:

flag = 0;

System.out.println("已退出系统！");

break;

default:

System.out.println("输入有误！");

new Scanner(System.in).nextLine();

}

}

}

}

class Date{

int year;

int month;

int day;

/*public Date(int year,int month,int day){

this.year = year;

this.month = month;

this.day = day;

}

public Date(){}*/

public String showDate(){

return year + "/"+ month+"/"+day;

}

}

class student{

int id;

String name;

Date date;

float score;

public student(){

id = 0;

name = null;

date = null;

score = 0f;

}

public void showStudent(){

System.out.println( id + " " + name + " "+ " " + date.showDate()+" "+score);

}

}

class studentMassage{

private student[] stu;

private int flag;

public studentMassage(int n){

flag = 0;

if(stu == null){

stu = new student[n];

for(int i =0;in;++i){

stu[i] = new student();

}

}

}

public void addStudent(int n){

flag = 1;

Scanner sc = new Scanner(System.in);

System.out.println("请输入"+n+"个学生信息");

for(int i = 0 ;istu.length;++i){

stu[i].date = new Date();

System.out.println("请输入第"+(i+1)+"个学生学号：");

stu[i].id = sc.nextInt();

System.out.println("请输入第"+(i+1)+"个学生姓名：");

stu[i].name = sc.next();

System.out.println("请输入第"+(i+1)+"个学生出生年份：");

stu[i].date.year = sc.nextInt();

System.out.println("请输入第"+(i+1)+"个学生出生月份：");

stu[i].date.month = sc.nextInt();

System.out.println("请输入第"+(i+1)+"个学生出生日期：");

stu[i].date.day = sc.nextInt();

//stu[i].date = new Date(year,month,day);

System.out.println("请输入第"+(i+1)+"个学生分数：");

stu[i].score = sc.nextFloat();

}

}

public void FindStudent(String sname){

student find = null;

if(flag != 0){

for(int i = 0;istu.length;++i){

if(sname.equals(stu[i].name))

find = stu[i];

}

if(find == null)

System.out.println("查无此人！");

else

find.showStudent();

}else

System.out.println("没有输入学生信息！");

}

public void showallStudent(){

System.out.println("所有学生的信息如下：");

System.out.println("学号 姓名 生日 分数");

for(int i = 0;istu.length;++i){

stu[i].showStudent();

}

}

}

java学生成绩管理系统

Java学生成绩管理系统源代码：

import Java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.io.StringReader;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Collections;

import java.util.HashMap;

import java.util.Iterator;

import java.util.StringTokenizer;

/*

* Created on 2005-1-11

*/

/**

* @author 让炜

* @since 1.0

*

* TODO 学生成绩治理系统

* 通过学号查找,修改,删除数据

*

*/

public class LittleProgram

{

static boolean isDelete = true;

static boolean isFind = true;

public static void main(String [] args)//主方法,程序从这里开始运行

throws IOException,NumberNotFoundException

{

int choice=-1;

do{

LittleProgram lp = new LittleProgram();

System.out.println();

System.out.println("\t####################################");

System.out.println();

System.out.println("\t\t Java学生成绩治理系统1.1");

System.out.println("\t\t请用学号查找,修改,删除数据");

System.out.println();

System.out.println("\t####################################\n");

System.out.print("1.增加数据:\n"+

"2.查找数据:\n"+

"3.删除数据:\n"+

"4.清除所有数据:\n"+

"5.把数据全部打印到屏幕\n"+

"6.把成绩按学号排序\n"+

"7.修改数据\n"+

"8.统计已记录成绩学生数\n"+

"9.关于作者\n"+

"0.退出程序.\n" +

"输入:");

BufferedReader in = //从终

new BufferedReader( //端接

new InputStreamReader(System.in));//收数

String inputLine = in.readLine(); //字选

choice= Integer.valueOf(inputLine).intValue();//项;

switch(choice)

{

case 1: {//1.增加数据

String str = lp.inputData();

lp.addData(str);

System.out.println("增加数据成功.");

timeOut(1);

}break;

case 2: {//2.查找数据

long find = 0;

资料引用: