java管理系统简单代码 java管理系统源码

求用Java编写的学生成绩管理系统的完整代码,要能运行的

以下方法实现了用户界面登陆

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import java.awt.*;

import java.awt.event.*;

public class DengLuJieMian extends Frame implements ActionListener

{

Label username=new Label("用户名:");//使用文本创建一个用户名标签

TextField t1=new TextField();//创建一个文本框对象

Label password=new Label("密码:");//创建一个密码标签

TextField t2=new TextField();

Button b1=new Button("登陆");//创建登陆按钮

Button b2=new Button("取消");//创建取消按钮

public DengLuJieMian()

{

this.setTitle("学生信息管理系统");//设置窗口标题

this.setLayout(null);//设置窗口布局管理器

username.setBounds(50,40,60,20);//设置姓名标签的初始位置

this.add(username);// 将姓名标签组件添加到容器

t1.setBounds(120,40,80,20);// 设置文本框的初始位置

this.add(t1);// 将文本框组件添加到容器

password.setBounds(50,100,60,20);//密码标签的初始位置

this.add(password);//将密码标签组件添加到容器

t2.setBounds(120,100,80,20);//设置密码标签的初始位置

this.add(t2);//将密码标签组件添加到容器

b1.setBounds(50,150,60,20);//设置登陆按钮的初始位置

this.add(b1);//将登陆按钮组件添加到容器

b2.setBounds(120,150,60,20);//设置取消按钮的初始位置

this.add(b2);// 将取消按钮组件添加到容器

b1.addActionListener(this);//给登陆按钮添加监听器

b2.addActionListener(this);// 给取消按钮添加监听器

this.setVisible(true);//设置窗口的可见性

this.setSize(300,200);//设置窗口的大小

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

});//通过内部类重写关闭窗体的方法

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==b1)//处理登陆事件

{

String name=t1.getText();

String pass=t2.getText();

if(name!=nullpass.equals("000123"))//判断语句

{

new StudentJieMian();

}

}

}

public static void main(String args[])//主函数

{

new DengLuJieMian();

}

}

以下方法实现了学生界面设计

import java.awt.*;

import java.awt.event.*;

class StudentJieMian extends Frame implements ActionListener

{

MenuBar m=new MenuBar();//创建菜单栏

Menu m1=new Menu("信息");//创建菜单“信息”

MenuItem m11=new MenuItem("插入");//创建“插入”的菜单项

MenuItem m12=new MenuItem("查询");

Menu m2=new Menu("成绩");//创建菜单“成绩”

MenuItem m21=new MenuItem("查询");

public StudentJieMian()

{

this.setTitle("学生界面");//设置窗口标题

this.setLayout(new CardLayout());//设置窗口布局管理器

this.setMenuBar(m);//将菜单栏组件添加到容器

m.add(m1);//将信息菜单放入菜单栏

m.add(m2);

m1.add(m11);//将“插入”菜单项添加到“信息”菜单

m1.add(m12); //将“查询”菜单项添加到“信息”菜单

m2.add(m21); //将“查询”菜单项添加到“成绩”菜单

m11.addActionListener(this); //给“插入”菜单项添加监听器

m12.addActionListener(this); //给“查询”菜单项添加监听器

m21.addActionListener(this); //给“查询”菜单项添加监听器

this.setVisible(true); //设置窗口的可见性

this.setSize(300,200); //设置窗口的大小

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);//关闭窗口

}

});

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==m11) //处理“添加信息”事件

{

new AddStudent();

}

if(e.getSource()==m12) //处理“查询信息”事件

{

new SelectStudent();

}

if(e.getSource()==m21) //处理“查询成绩”事件

{

new ChengJiStudent();

}

}

public static void main(String args[])

{ new StudentJieMian(); //创建一个对象 }

求一段简单的JAVA代码 要求员工工资管理系统的一个增删改查代码,谢谢了

对数据库进行增删改查?

以下是 sql server 2013+java.实现的是对MSC对象的增删改查.

需要下载连接驱动程序:com.microsoft.sqlserver.jdbc.SQLServerDriver

网上搜一下就行

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

class MSC

{

public String MscID;

public String MscName;

public String MscCompany;

public float MscLongitude;

public float MscLatitude;

public float MscAltitude;

public MSC(String MscID, String MscName, String MscCompany,

float MscLongitude, float MscLatitude,float MscAltitude){

this.MscID = MscID;

this.MscName = MscName;

this.MscCompany = MscCompany;

this.MscLongitude =MscLongitude;

this.MscLatitude = MscLatitude;

this.MscAltitude = MscAltitude;

}

}

public class sqlserverjdbc {

public Connection getConnection(){

String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; //加载JDBC驱动

String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=gsm"; //连接服务器和数据库sample

String userName = "sa"; //默认用户名

String userPwd = "123"; //密码

Connection dbConn = null;

try {

Class.forName(driverName);

dbConn =DriverManager.getConnection(dbURL, userName, userPwd);

} catch (Exception e) {

e.printStackTrace();

}

return dbConn;

}

public void printUserInfo(){

Connection con = getConnection();

Statement sta = null;

ResultSet rs = null;

System.out.println("打印表格MSC信息");

try {

sta = con.createStatement();

rs = sta.executeQuery("select * from MSC信息");

System.out.println("MscID\tMscName\tMscCompany\tMscLongitude\tMscLatitude\tMscAltitude");

while(rs.next()){

System.out.println(rs.getString("MscID")+"\t"+

rs.getString("MscName")+"\t"+

rs.getString("MscCompany")+"\t"+

rs.getFloat("MscLongitude")+"\t"+

rs.getFloat("MscLatitude")+"\t"+

rs.getFloat("MscAltitude"));

}

con.close();

sta.close();

rs.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("打印完成\n");

}

public void delete(String MscID){

Connection con = getConnection();

String sql = "delete from MSC信息 where MscID = " + MscID;

PreparedStatement pst;

System.out.println("删除表格MSC信息中 ID = "+MscID+"的记录");

try {

pst = con.prepareStatement(sql);

pst.execute();

pst.close();

con.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println("记录删除失败!!!");

}

System.out.println("记录删除成功!!!\n");

}

public void insert(MSC msc){

Connection con = getConnection();

String sql = "insert into MSC信息 values(?,?,?,?,?,?)";

PreparedStatement pst;

System.out.println("插入一条记录");

try {

pst = con.prepareStatement(sql);

pst.setString(1, msc.MscID);

pst.setString(2, msc.MscName);

pst.setString(3, msc.MscCompany);

pst.setFloat(4, msc.MscLongitude);

pst.setFloat(5, msc.MscLatitude);

pst.setFloat(6, msc.MscAltitude);

pst.execute();

pst.close();

con.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println("插入失败!!!");

}

System.out.println("插入成功!!!\n");

}

//更新MscID的MscName

public void updateMscName(String MscID, String MscName){

Connection con = getConnection();

String sql = "update MSC信息 set MscName = ? where MscID = ?";

PreparedStatement pst;

System.out.println("修改一条记录");

try {

pst = con.prepareStatement(sql);

pst.setString(1, MscName);

pst.setString(2, MscID);

pst.execute();

pst.close();

con.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println("修改失败!!!");

}

System.out.println("修改成功!!!\n");

}

public static void main(String args[]){

sqlserverjdbc sql = new sqlserverjdbc();

sql.printUserInfo();

sql.delete("1111");

sql.printUserInfo();

sql.updateMscName("5215", "联想");

sql.printUserInfo();

sql.insert(new MSC("1111", "中兴" ," 中兴", (float)12.2, (float)3.4,(float)45.5));

sql.printUserInfo();

}

}

急求java学生信息管理系统源代码,带有连接数据库的,万分感谢

import java.awt.BorderLayout;

import java.awt.CardLayout;

import java.awt.Container;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JPanel;

import javax.swing.JToolBar;

import javax.swing.SwingConstants;

public class MainFrame extends JFrame implements ActionListener{

InsertPanel ip = null;

SelectPanel sp = null;

JPanel pframe;

JButton jb1,jb2,jb3;

JMenuItem jm11,jm21,jm22,jm23,jm31,jm32,jm41,jm42;

CardLayout clayout;

public MainFrame(String s){

super(s);

JMenuBar mb = new JMenuBar();

this.setJMenuBar(mb);

JMenu m1 = new JMenu("系统");

JMenu m2 = new JMenu("基本信息");

JMenu m3 = new JMenu("成绩");

JMenu m4 = new JMenu("奖惩");

mb.add(m1);

mb.add(m2);

mb.add(m3);

mb.add(m4);

jm11 = new JMenuItem("退出系统");

jm21 = new JMenuItem("输入");

jm22 = new JMenuItem("查询");

jm23 = new JMenuItem("更改");

jm31 = new JMenuItem("输入成绩");

jm32 = new JMenuItem("查询成绩");

jm41 = new JMenuItem("奖励");

jm42 = new JMenuItem("处分");

m1.add(jm11);

m2.add(jm21);

m2.add(jm22);

m2.add(jm23);

m3.add(jm31);

m3.add(jm32);

m4.add(jm41);

m4.add(jm42);

Icon i1 = new ImageIcon();

Icon i2 = new ImageIcon();

Icon i3 = new ImageIcon();

jb1 = new JButton(i1);

jb1.setToolTipText("输入");

jb2 = new JButton(i2);

jb2.setToolTipText("查询");

jb3 = new JButton(i3);

jb3.setToolTipText("退出");

JToolBar tb = new JToolBar("系统工具");

tb.add(jb1);

tb.add(jb2);

tb.add(jb3);

add(tb,BorderLayout.NORTH);

jm11.addActionListener(this);

jm21.addActionListener(this);

jm22.addActionListener(this);

jb1.addActionListener(this);

jb2.addActionListener(this);

jb3.addActionListener(this);

clayout = new CardLayout();

pframe = new JPanel(clayout);

add(pframe);

JPanel mainp = new JPanel(new BorderLayout());

JLabel mainl = new JLabel("学生信息管理平台",SwingConstants.CENTER);

mainl.setFont(new Font("serif",Font.BOLD,30));

mainp.add(mainl);

pframe.add(mainp,"main");

clayout.show(pframe, "main");

}

public void actionPerformed(ActionEvent e){

if(e.getSource() == jm21 || e.getSource() == jb1){

if(ip == null){

ip= new InsertPanel();

pframe.add(ip,"insert");

}

clayout.show(pframe, "insert");

this.setTitle("输入学生信息");

}

else if(e.getSource() == jm22 || e.getSource() == jb2){

if(sp == null){

sp= new SelectPanel();

pframe.add(sp,"select");

}

clayout.show(pframe, "select");

this.setTitle("查询学生信息");

}

else if(e.getSource() == jm11 || e.getSource() == jb3){

System.exit(0);

}

}

}

第二个:

import javax.swing.JFrame;

public class MainTest {

public static void main(String [] args){

MainFrame f = new MainFrame("学生信息管理平台");

f.setSize(400,300);

f.setLocation(350,250);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.setVisible(true);

}

}

第二个:

import java.sql.Connection;

import java.sql.DriverManager;

public class MySQLConnection {

static Connection getCon(){

Connection con = null;

try{

Class.forName("com.mysql.jdbc.Driver");

con = DriverManager.getConnection("jdbc:mysql://localhost/test","root","123");

}

catch(Exception e){

System.out.println("建立数据库连接遇到异常!");

}

return con;

}

}

第四个:

import java.awt.BorderLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.SwingConstants;

public class SelectPanel extends JPanel implements ActionListener{

JButton jb;

JTextField jt;

JTextField jt1,jt2,jt3,jt4;

public SelectPanel(){

JLabel jl = new JLabel("请输入学号:",SwingConstants.CENTER);

jt = new JTextField();

jb = new JButton("确定");

JPanel jp1 = new JPanel(new GridLayout(1,3));

jp1.add(jl);

jp1.add(jt);

jp1.add(jb);

JLabel j1,j2,j3,j4;

j1 = new JLabel("学号:",SwingConstants.CENTER);

j2 = new JLabel("姓名:",SwingConstants.CENTER);

j3 = new JLabel("性别:",SwingConstants.CENTER);

j4 = new JLabel("年龄:",SwingConstants.CENTER);

jt1 = new JTextField(6);

jt1.setEditable(false);

jt2 = new JTextField(6);

jt2.setEditable(false);

jt3 = new JTextField(6);

jt3.setEditable(false);

jt4 = new JTextField(6);

jt4.setEditable(false);

JPanel jp2 = new JPanel(new BorderLayout());

JPanel jp3 = new JPanel(new GridLayout(4,2));

jp2.add(new JLabel(""),BorderLayout.NORTH);

jp3.add(j1);

jp3.add(jt1);

jp3.add(j2);

jp3.add(jt2);

jp3.add(j3);

jp3.add(jt3);

jp3.add(j4);

jp3.add(jt4);

jp2.add(jp3);

this.setLayout(new BorderLayout());

add(jp1,BorderLayout.NORTH);

add(jp2);

jb.addActionListener(this);

}

public void actionPerformed(ActionEvent e){

if(e.getSource() == jb){

String stuNo = jt.getText().trim();

Student s = new Student();

boolean b = true;

try{

b = s.selectByStuNo(stuNo);

}

catch(Exception ex){

System.out.println("查询学生信息遇到异常!");

}

if(b){

jt1.setText(s.getStuNo());

jt2.setText(s.getName());

jt3.setText(s.getGender());

int a = s.getAge();

Integer i = new Integer(a);

jt4.setText(i.toString());

}

else{

JOptionPane.showMessageDialog(null, "无此学生!");

}

}

}

}

第五个:

import javax.swing.JFrame;

public class SelectTest {

public static void main(String [] args){

JFrame f = new JFrame("查询学生信息");

SelectPanel p = new SelectPanel();

f.add(p);

f.setSize(400,300);

f.setLocation(300,250);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.setVisible(true);

}

}

第六个:

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.Statement;

public class Student {

String stuNo;

String name;

String gender;

int age;

public Student(){}

public Student(String stuNo,String name,String gender, int age){

this.stuNo = stuNo;

this.name = name;

this.gender = gender;

this.age = age;

}

public String getStuNo(){

return stuNo;

}

public void setStuNo(String stuNo){

this.stuNo = stuNo;

}

public String getName(){

return name;

}

public void setName(String name){

this.name = name;

}

public String getGender(){

return gender;

}

public void setGender(String gender){

this.gender = gender;

}

public int getAge(){

return age;

}

public void setAge(int age){

this.age = age;

}

public boolean insertStudent(){

boolean b = true;

try{

Connection con = MySQLConnection.getCon();

Statement statement = con.createStatement();

String sql = "insert into student values('" + stuNo + "','" + name +"','" + gender + "'," + age + ")";

sql = new String(sql.getBytes("gb2312"),"ISO8859_1");

statement.executeUpdate(sql);

con.close();

}

catch(Exception e){

b = false;

System.out.println("插入数据库遇到异常!");

}

return b;

}

public boolean selectByStuNo(String stuNo)throws Exception{

boolean b = true;

Connection con = MySQLConnection.getCon();

Statement statement = con.createStatement();

String sql = "select * from student where stuNo =" + stuNo;

ResultSet rs = statement.executeQuery(sql);

if(rs != null rs.next()){

String no = rs.getString(1);

this.setStuNo(no);

String n = rs.getString(2);

n = new String(n.getBytes("ISO8859_1"),"gb2312");

this.setName(n);

String g = rs.getString(3);

g = new String (g.getBytes("ISO8859_1"),"gb2312");

this.setGender(g);

this.setAge(rs.getInt(4));

b = true;

}

rs.close();

statement.close();

con.close();

return b;

}

}

数据库你自己弄吧,我没时间弄了!初学得多动手哦

JAVA程序设计-简单的学生信息管理系统

我们有这个小组作业。

不过还没写出来。。

分了任务的。。。

慢慢写好了。。。

用JD做吧。。既然你都列了这么多的条条框框,那你应该晓得大体怎么构建撒。。一个做有点工作量。不过感觉也不是不可能。。就像上学期做的JAVA记事本一样。。。头脑清醒。。多上百度。。哎。。就OK了。

用JAVA怎么编写停车场管理系统源代码?

importjava.text.SimpleDateFormat;\x0d\x0aimportjava.util.Date;\x0d\x0aimportjava.util.Scanner;\x0d\x0a\x0d\x0a/*********************************\x0d\x0a*停车场管理\x0d\x0a*authorzhang\x0d\x0a*2013-12-13\x0d\x0a********************************/\x0d\x0apublicclassCarStopManager{\x0d\x0a\x0d\x0apublicstaticvoidmain(String[]args){\x0d\x0aScannersc=newScanner(System.in);\x0d\x0a\x0d\x0aSystem.out.println("请入车牌号:");\x0d\x0aStringcarno=sc.next();\x0d\x0aCarStopManagercarStopManager=newCarStopManager();\x0d\x0acarStopManager.setCarNo(carno);//设置车牌号\x0d\x0a\x0d\x0aSimpleDateFormatformat=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss");\x0d\x0aStringsdate=format.format(newDate());\x0d\x0aSystem.out.println("当前时间(入场时间)是:"+sdate);\x0d\x0a\x0d\x0aSystem.out.println("需要开出车场吗?yes/no:");\x0d\x0aStringyesno=sc.next();\x0d\x0a\x0d\x0aif(yesno.equals("yes")){\x0d\x0aStringedate=format.format(newDate());\x0d\x0aSystem.out.println("出场时间是:"+edate);\x0d\x0a//计算方法\x0d\x0acarManager(2,sdate,edate,carStopManager);\x0d\x0a}\x0d\x0a}\x0d\x0a/**\x0d\x0a*计算方法\x0d\x0a*/\x0d\x0apublicstaticvoidcarManager(inttype,StringstarTime,\x0d\x0aStringendTime,CarStopManagercarStopManager){\x0d\x0a\x0d\x0aif(type==1){//按月收费\x0d\x0aSystem.out.println("如若没有缴纳月费请缴纳800元,如若缴纳将不再提示!");\x0d\x0a}else{\x0d\x0a/**\x0d\x0a*一般不会有停车几个月的吧?先不考虑停车几年或者几个月的\x0d\x0a*/\x0d\x0aStringsDay=starTime.substring(8,10);//入场日期(天)\x0d\x0aStringsHour=starTime.substring(11,13);//入场小时\x0d\x0aStringsMM=starTime.substring(14,16);//入场分钟\x0d\x0a\x0d\x0aStringeDay=starTime.substring(8,10);//出场日期(天)\x0d\x0aStringeHour=endTime.substring(11,13);//出厂小时\x0d\x0aStringeMM=endTime.substring(14,16);//出厂分钟\x0d\x0a\x0d\x0afloatmoney=0;//需缴纳的费用\x0d\x0aintshour=Integer.parseInt(sHour);\x0d\x0aintehour=Integer.parseInt(eHour);\x0d\x0aintsmm=Integer.parseInt(sMM);\x0d\x0aintemm=Integer.parseInt(eMM);\x0d\x0aintrehour=0;//停车几个小时\x0d\x0a\x0d\x0aif(sDay.equals(eDay)){//同一天\x0d\x0a//当天6点到20点之间\x0d\x0aif((shour=6shour

回答于 2022-12-14

简单的JAVA学生管理系统代码···

lListStudent students = new ArrayListStudent();

BufferedReader br = new BufferedReader(new FileReader("D:\student.txt"));

String tmpStr = br.readLine();

while(tmpStr != null){

int firstIndex = tmpStr.indexOf(" ");

int secondIndex = tmpStr.indexOf(" ",firstIndex + 1);

int thirdIndex = tmpStr.indexOf(" ", secondIndex + 1);

int forthIndex = tmpStr.indexOf(" ", thirdIndex + 1);

Integer stuId = Integer.parseInt(tmpStr.substring(0,firstIndex));

String stuName = tmpStr.substring(firstIndex + 1,secondIndex);

Integer stuYW = Integer.parseInt(tmpStr.substring(secondIndex + 1,thirdIndex));

Integer stuSX = Integer.parseInt(tmpStr.substring(thirdIndex + 1,forthIndex));

Integer stuYY = Integer.parseInt(tmpStr.substring(forthIndex + 1));

Student student = new Student();

student.setStuId(stuId);

student.setStuName(stuName);

student.setStuYW(stuYW);

student.setStuSX(stuSX);

student.setStuYY(stuYY);

students.add(student);

tmpStr.readLine();

}

//创建一个学生实体类 封装stuId stuName stuYW stuSx stuYY 这5个属性。。。

//已经帮你把数据拆分出来 并以Student 对象的形式放入集合中了 接下来 给分吧 哇咔咔


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