java教学平台的源代码 java编程平台

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;

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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

求Java的在线学习系统源代码

Java 程序员必须收藏的资源大全

古董级工具

这些工具伴随着Java一起出现，在各自辉煌之后还在一直使用。

Apache Ant：基于XML的构建管理工具。

cglib：字节码生成库。

GlassFish：应用服务器，由Oracle赞助支持的Java EE参考实现。

Hudson：持续集成服务器，目前仍在活跃开发。

JavaServer Faces：Mojarra是JSF标准的一个开源实现，由Oracle开发。

JavaServer Pages：支持自定义标签库的网站通用模板库。

Liquibase：与具体数据库独立的追踪、管理和应用数据库Scheme变化的工具。

2.构建工具

构建及应用依赖关系处理工具。

Apache Maven：Maven是一款声明式构建及依赖管理工具，采用约定优于配置方式进行管理。相对Apache Ant更推荐使用Maven，前者采用了过程式管理，维护相对困难。

Bazel：来自Google的构建工具，可以快速、可靠地构建代码。

Gradle：使用Groovy（非XML）进行增量构建，可以很好地与Maven依赖管理配合工作。

需要这些学习资料和工具的可以自己下载哦

java中如何根据一个网址获得该网页的源代码？

package test;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

public class HttpTest {

private String u;

private String encoding;

public static void main(String[] args) throws Exception {

HttpTest client = new HttpTest("", "UTF-8");

client.run();

}

public HttpTest(String u, String encoding) {

this.u = u;

this.encoding = encoding;

}

public void run() throws Exception {

URL url = new URL(u);// 根据链接（字符串格式），生成一个URL对象

HttpURLConnection urlConnection = (HttpURLConnection) url

.openConnection();// 打开URL

BufferedReader reader = new BufferedReader(new InputStreamReader(

urlConnection.getInputStream(), encoding));// 得到输入流，即获得了网页的内容

String line; // 读取输入流的数据，并显示

while ((line = reader.readLine()) != null) {

System.out.println(line);

}

}

}

根据具体问题类型，进行步骤拆解／原因原理分析／内容拓展等。

具体步骤如下：／导致这种情况的原因主要是……

java课程设计源代码（急！！！！）

import java.awt.Color;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.SwingConstants;

import javax.swing.border.LineBorder;

public class game21 extends JFrame {

private JLabel label_2;

private int number;

private int sum;

final JLabel label = new JLabel();

final JLabel label_1 = new JLabel();

public static void main(String[] args) {

new game21();

}

public game21() {

super("21点？！");

getContentPane().setLayout(null);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

final JButton button = new JButton();

button.addActionListener(new ActionListener() {

public void actionPerformed(final ActionEvent arg0) {

onClick();

}

});

button.setText("出牌");

button.setBounds(170, 350, 106, 28);

getContentPane().add(button);

label.setBorder(new LineBorder(Color.black, 1, false));

label.setHorizontalAlignment(SwingConstants.CENTER);

label.setFont(new Font("", Font.BOLD, 26));

label.setText("背面");

label.setBounds(158, 81, 137, 153);

getContentPane().add(label);

label_1.setText("你已经拥有的牌:");

label_1.setBounds(109, 22, 270, 45);

getContentPane().add(label_1);

this.setBounds(200, 300, 501, 528);

this.setVisible(true);

getContentPane().add(getLabel_2());

}

public int randNumber() {

try {

Thread.sleep(10);

} catch (InterruptedException e) {

e.printStackTrace();

}

return (int) (Math.random() * 10 + 1);

}

public void onClick() {

number = this.randNumber();

this.sum += number;

label.setText("" + number);

String strTemp = this.label_1.getText();

strTemp += "" + number + " ";

label_1.setText(strTemp);

String temp = "合计：" + sum;

label_2.setText(temp);

isWin();

}

public void isWin() {

if (sum 21) {

JOptionPane.showMessageDialog(this, "你输了");

clear();

return;

} else if (sum == 21) {

JOptionPane.showMessageDialog(this, "你赢了");

clear();

return;

} else {

int i = JOptionPane.showOptionDialog(this, "是否继续？", "提示",

JOptionPane.OK_CANCEL_OPTION,

JOptionPane.INFORMATION_MESSAGE, null, null, null);

if (i == JOptionPane.OK_OPTION) {

onClick();

} else

return;

}

}

private void clear() {

label_2.setText("合计：");

sum = 0;

number = 0;

label_1.setText("你已经拥有的牌:");

}

/**

* @return

*/

protected JLabel getLabel_2() {

if (label_2 == null) {

label_2 = new JLabel();

label_2.setText("合计:");

label_2.setBounds(313, 35, 66, 18);

}

return label_2;

}

}

真好无聊中。。

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