java数据管理系统代码 java车辆管理系统源代码

求java中类似学生信息管理系统中按学号，按姓名排序的代码

import java.util.ArrayList;

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import java.util.Collections;

import java.util.Comparator;

import java.util.List;

public class Sort {

public static void main(String[] args) {

Student p1 = new Student(1001, "小明", 20);

Student p2 = new Student(1002, "小红", 21);

Student p3 = new Student(1003, "小黑", 19);

ListStudent list = new ArrayListStudent();

list.add(p1);

list.add(p2);

list.add(p3);

Collections.sort(list, new ComparatorStudent() {

/*

 * int compare(Student o1, Student o2) 返回一个基本类型的整型， 返回负数表示：o1 小于o2，

 * 返回0 表示：o1和o2相等， 返回正数表示：o1大于o2。

 */

public int compare(Student o1, Student o2) {

// 按照学生的学号进行升序排列

if (o1.getId()  o2.getId()) {

return 1;

}

if (o1.getId() == o2.getId()) {

return 0;

}

return -1;

}

});

write(list);

System.out.println("---------------------");

Collections.sort(list, new ComparatorStudent() {

/*

 * int compare(Student o1, Student o2) 返回一个基本类型的整型， 返回负数表示：o1 小于o2，

 * 返回0 表示：o1和o2相等， 返回正数表示：o1大于o2。

 */

public int compare(Student o1, Student o2) {

// 按照学生的年龄进行升序排列

if (o1.getAge()  o2.getAge()) {

return 1;

}

if (o1.getAge() == o2.getAge()) {

return 0;

}

return -1;

}

});

write(list);

}

public static void write(ListStudent list) {

for (Student s : list) {

System.out.println(s.getId() + "\t" + s.getName() + "\t"

+ s.getAge());

}

}

}

public class Student {

private int id ;

private String name;

private int age;

//构造方法

public Student(int id,String name,int age){

this.id = id;

this.name = name;

this.age = age;

}

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

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;

}

}

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

(高分)急求连接数据库的JAVA学生信息管理系统源代码

你要连的数据库是SQL 还是ORACLE

但是代码都查不多

下面的是连接SQL数据库的代码

你需要先创建个数据库,还有表,表的字段是登陆名和密码

下面的"SA" 是登陆名 "111111" 是密码

ORACLE 和这个查不多

import java.sql.*;//做数据库时候必须要引入的包

import com.microsoft.jdbc.sqlserver.SQLServerDriver;

public class DBFactory {

Connection Conn=null;

PreparedStatement Stmt=null;

ResultSet Rs=null;

String driverName="com.microsoft.jdbc.sqlserver.SQLServerDriver";

String OracleUserName="sa";

String OracleUserPwd="111111";

String ConnUrl="jdbc:sqlserver://localhost:1433;databaseName=news";

public Connection getConnection()

{

try {

Class.forName(driverName);

} catch (ClassNotFoundException ex) {

System.out.println("加载驱动程序有错误");

}

try {

Conn = DriverManager.getConnection(ConnUrl, OracleUserName,OracleUserPwd);

} catch (SQLException ex1) {

System.out.print("取得连接的时候有错误，请核对用户名和密码");

}

return Conn;

}

这个是连接ORACLE数据库代码

import java.sql.*;

import oracle.jdbc.driver.OracleDriver;

public class DBFactory {

Connection Conn=null;

PreparedStatement Stmt=null;

ResultSet Rs=null;

String driverName="oracle.jdbc.driver.OracleDriver";

String OracleUserName="scott";

String OracleUserPwd="tiger";

String ConnUr1="jdbc:oracle:thin:@locahost:1521:Ora";

public Connection getConnection()

{

try {

Class.forName(driverName);

} catch (ClassNotFoundException ex) {

System.out.println("加载驱动程序有错误");

}

try {

Conn = DriverManager.getConnection(ConnUr1, OracleUserName,OracleUserPwd);

} catch (SQLException ex1) {

System.out.print("取得连接时有错误，请核对用户名和密码");

}

return Conn;

}

希望能追加分数谢谢！