开发环境
开发语言为Java，开发环境Eclipse或者IDEA都可以。数据库采用：MySQL。运行主程序，或者执行打开JAR文件即可以运行本程序。
系统框架
利用JDK自带的SWING框架开发，不需要安装第三方JAR包。MySQL数据库，纯窗体模式，直接运行Main文件即可以
主要功能
运行方法
1 运行Main.java文件
2 程序出现在线考试系统登陆的面板
主要模块
本次分享的为Java编写的窗体版本程序--在线考试系统，其主要目的是能对大学生在日常学习过程的知识进行有效的测试，通过系统了解大学生对课程知识的掌握程度，以便老师更好的有针对性的进行教学调整。其主要功能如下：
1 用户通过用户名和密码，登陆到在线考试系统中。同时也可以点退出按钮，退出在线考试系统
2 核对考生信息：学生在成功登陆到考试系统后，会弹出学号、姓名、专业、学院等信息，点击核对无误按钮后进入系统考试。
3 参与在线考试：学生点击在线考试按钮，开始考试。考试的过程从逐个题目开始作答，每个题目有对应的分数，答对获取相应的分数；打错该题得0分。答完所有题目后，点击交卷，完成本次考试。
4 查看考试成绩：学生点击主界面上得查看成绩，可以查看到本次考试得成绩和错题信息。
5 退出系统。学生点击退出按钮，退出整个应用程序。
6 老师可以对学生信息新增、修改、删除等操作。只有在系统中存在的考生，才能登陆到系统进行考试。
这个项目涵盖了java 窗体编程的各种知识，包括UI界面设计、时间处理、数据库操作、事件处理操作等。通过这个项目能快速提升java 窗体编程，是非常好一个有价值的的项目。代码可以直接运行，没有任何bug。
实现效果
关键代码
package com.num580.exam.ui;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.ButtonModel;
import javax.swing.JScrollPane;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.GridLayout;
import javax.swing.SwingConstants;
import java.awt.Color;
import java.awt.SystemColor;
import java.awt.Font;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.ButtonGroup;
import com.num580.exam.client.MyTime;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class ExamFrame extends JFrame {
private JPanel panelTitle;
private static JTextField textFill1;
private static JTextField textFill2;
private final ButtonGroup buttonGroup1 = new ButtonGroup();
private final ButtonGroup buttonGroup2 = new ButtonGroup();
private final ButtonGroup buttonGroup3 = new ButtonGroup();
private final ButtonGroup buttonGroup4 = new ButtonGroup();
private final ButtonGroup buttonGroup5 = new ButtonGroup();
private static JTextField textFill3;
private JPanel panelTitleUp;
private JLabel lavelTitle;
private JPanel panelTitleCenter;
private JLabel labelNum;
private JLabel lbdbNum;
private JLabel labelName;
private JLabel lbdbName;
private JLabel labelTime;
private JLabel ladbTime;
private JPanel panelTitleDown;
private JLabel labelTimeTaken;
private JLabel lbdbTimeTaken;
private JLabel labelTimeLeft;
private JLabel lbdbTimeLeft;
private JScrollPane scrollPane;
private JPanel panelSelect;
private JLabel labelSelect;
private JLabel select1;
private static JRadioButton rbSelect11;
private static JRadioButton rbSelect12;
private static JRadioButton rbSelect13;
private static JRadioButton rbSelect14;
private JLabel select2;
private static JRadioButton rbSelect21;
private static JRadioButton rbSelect22;
private static JRadioButton rbSelect23;
private static JRadioButton rbSelect24;
private JLabel select3;
private static JRadioButton rbSelect31;
private static JRadioButton rbSelect32;
private static JRadioButton rbSelect33;
private static JRadioButton rbSelect34;
private JLabel select4;
private static JRadioButton rbSelect41;
private static JRadioButton rbSelect42;
private static JRadioButton rbSelect43;
private static JRadioButton rbSelect44;
private JLabel select5;
private static JRadioButton rbSelect51;
private static JRadioButton rbSelect52;
private static JRadioButton rbSelect53;
private static JRadioButton rbSelect54;
private JLabel labelFill;
private JLabel labelFill1;
private JLabel labelFillPlea1;
private JLabel labelFill2;
private JLabel labelFill3;
private JLabel labelFillPlea3;
private JPanel panelBtn;
private JButton btnsubmit;
private static String btselect1;
private static String btselect2;
private static String btselect3;
private static String btselect4;
private static String btselect5;
private String[] studentMess = null;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
ExamFrame frame = new ExamFrame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public ExamFrame() {
/** 登录的学生信息 **/
studentMess = StuLoginFrame.getStudentMess();
setTitle("\u6B63\u5728\u6D4B\u8BD5");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
setResizable(false);
panelTitle = new JPanel();
panelTitle.setBorder(new EmptyBorder(5, 5, 5, 5));
setSize(700,900);
setContentPane(panelTitle);
panelTitle.setLayout(new BorderLayout(0, 0));
panelTitleUp = new JPanel();
panelTitleUp.setBackground(Color.WHITE);
panelTitle.add(panelTitleUp, BorderLayout.NORTH);
panelTitleUp.setLayout(new BorderLayout(0, 0));
lavelTitle = new JLabel("\u4E0A\u673A\u6D4B\u8BD5");
lavelTitle.setHorizontalAlignment(SwingConstants.CENTER);
lavelTitle.setFont(new Font("华文行楷", Font.BOLD, 28));
lavelTitle.setBackground(SystemColor.menu);
panelTitleUp.add(lavelTitle, BorderLayout.NORTH);
panelTitleCenter = new JPanel();
panelTitleCenter.setBackground(Color.WHITE);
panelTitleUp.add(panelTitleCenter, BorderLayout.CENTER);
panelTitleCenter.setLayout(new GridLayout(1, 0, 0, 0));
labelNum = new JLabel("\u5B66\u53F7\uFF1A");
labelNum.setHorizontalAlignment(SwingConstants.CENTER);
panelTitleCenter.add(labelNum);
lbdbNum = new JLabel("\u6570\u636E\u5E93\u83B7\u53D6");
panelTitleCenter.add(lbdbNum);
//设置成登录的学生学号
lbdbNum.setText(studentMess[0]);
labelName = new JLabel("\u59D3\u540D\uFF1A");
labelName.setHorizontalAlignment(SwingConstants.CENTER);
panelTitleCenter.add(labelName);
lbdbName = new JLabel("\u6570\u636E\u5E93\u83B7\u53D6");
panelTitleCenter.add(lbdbName);
//设置成登录的学生姓名
lbdbName.setText(studentMess[2]);
labelTime = new JLabel("\u8003\u8BD5\u65F6\u95F4\uFF1A");
labelTime.setHorizontalAlignment(SwingConstants.CENTER);
panelTitleCenter.add(labelTime);
ladbTime = new JLabel("1\u5206\u949F");
panelTitleCenter.add(ladbTime);
panelTitleDown = new JPanel();
panelTitleDown.setBackground(Color.WHITE);
panelTitleUp.add(panelTitleDown, BorderLayout.SOUTH);
panelTitleDown.setLayout(new GridLayout(1, 0, 0, 0));
labelTimeTaken = new JLabel("\u5DF2\u8003\u65F6\u95F4\uFF1A");
labelTimeTaken.setBackground(Color.WHITE);
labelTimeTaken.setFont(new Font("宋体", Font.PLAIN, 14));
labelTimeTaken.setHorizontalAlignment(SwingConstants.RIGHT);
panelTitleDown.add(labelTimeTaken);
lbdbTimeTaken = new JLabel("");
lbdbTimeTaken.setForeground(Color.RED);
lbdbTimeTaken.setFont(new Font("宋体", Font.PLAIN, 14));
panelTitleDown.add(lbdbTimeTaken);
//正计时
MyTime.timeHasTaken(lbdbTimeTaken);
labelTimeLeft = new JLabel("\u8FD8\u5269\u65F6\u95F4\uFF1A");
labelTimeLeft.setFont(new Font("宋体", Font.PLAIN, 14));
labelTimeLeft.setHorizontalAlignment(SwingConstants.RIGHT);
panelTitleDown.add(labelTimeLeft);
lbdbTimeLeft = new JLabel("");
lbdbTimeLeft.setForeground(Color.RED);
lbdbTimeLeft.setFont(new Font("宋体", Font.PLAIN, 14));
panelTitleDown.add(lbdbTimeLeft);
//倒计时
MyTime.timeWillTake(lbdbTimeLeft);
scrollPane = new JScrollPane();
panelTitle.add(scrollPane, BorderLayout.CENTER);
panelSelect = new JPanel();
panelSelect.setBackground(Color.WHITE);
scrollPane.setViewportView(panelSelect);
panelSelect.setLayout(new GridLayout(0, 1, 0, 0));
labelSelect = new JLabel("\u4E00\u3001\u9009\u62E9\u9898");
panelSelect.add(labelSelect);
select1 = new JLabel("1.\u4E0B\u5217\u4E0D\u53EF\u4F5C\u4E3Ajava\u8BED\u8A00\u4FEE\u9970\u7B26\u7684\u662F\uFF1F");
panelSelect.add(select1);
rbSelect11 = new JRadioButton("A. a1");
btselect1 ="未答";
rbSelect11.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
btselect1 = getSelect1();
}
});
buttonGroup1.add(rbSelect11);
panelSelect.add(rbSelect11);
rbSelect12 = new JRadioButton("B. $1");
btselect1 ="未答";
rbSelect12.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect1 = getSelect1();
}
});
buttonGroup1.add(rbSelect12);
panelSelect.add(rbSelect12);
rbSelect13 = new JRadioButton("C. _1");
btselect1 ="未答";
rbSelect13.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect1 = getSelect1();
}
});
buttonGroup1.add(rbSelect13);
panelSelect.add(rbSelect13);
rbSelect14 = new JRadioButton("D .11");
btselect1 ="未答";
rbSelect14.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect1 = getSelect1();
}
});
buttonGroup1.add(rbSelect14);
panelSelect.add(rbSelect14);
select2 = new JLabel("2.\u6709\u4E00\u6BB5java\u5E94\u7528\u7A0B\u5E8F\uFF0C\u5B83\u7684\u4E3B\u7C7B\u540D\u662Fa1\uFF0C\u90A3\u4E48\u4FDD\u5B58\u5B83\u7684\u6E90\u6587\u4EF6\u540D\u53EF\u4EE5\u662F\uFF1F");
panelSelect.add(select2);
rbSelect21 = new JRadioButton("A. a1.java");
btselect2 ="未答";
rbSelect21.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
btselect2 = getSelect2();
}
});
buttonGroup2.add(rbSelect21);
panelSelect.add(rbSelect21);
rbSelect22 = new JRadioButton("B. a.class");
btselect2 ="未答";
rbSelect22.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect2 = getSelect2();
}
});
buttonGroup2.add(rbSelect22);
panelSelect.add(rbSelect22);
rbSelect23 = new JRadioButton("C. a1");
btselect2 ="未答";
rbSelect23.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect2 = getSelect2();
}
});
buttonGroup2.add(rbSelect23);
panelSelect.add(rbSelect23);
rbSelect24 = new JRadioButton("D. \u90FD\u53EF\u4EE5");
btselect2 ="未答";
rbSelect24.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect2 = getSelect2();
}
});
buttonGroup2.add(rbSelect24);
panelSelect.add(rbSelect24);
select3 = new JLabel("3.\u4E0B\u9762\u6B63\u786E\u58F0\u660E\u4E00\u4E2A\u4E00\u7EF4\u6570\u7EC4\u7684\u662F\uFF1F");
panelSelect.add(select3);
rbSelect31 = new JRadioButton("A. String a");
btselect3 ="未答";
rbSelect31.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect3 = getSelect3();
}
});
buttonGroup3.add(rbSelect31);
panelSelect.add(rbSelect31);
rbSelect32 = new JRadioButton("B. String a[]");
btselect3 ="未答";
rbSelect32.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect3 = getSelect3();
}
});
buttonGroup3.add(rbSelect32);
panelSelect.add(rbSelect32);
rbSelect33 = new JRadioButton("C. char a[][]");
btselect3 ="未答";
rbSelect33.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect3 = getSelect3();
}
});
buttonGroup3.add(rbSelect33);
panelSelect.add(rbSelect33);
rbSelect34 = new JRadioButton("D. String a[10]");
btselect3 ="未答";
rbSelect34.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect3 = getSelect3();
}
});
buttonGroup3.add(rbSelect34);
panelSelect.add(rbSelect34);
select4 = new JLabel("4.\u4E0B\u9762\u5173\u4E8E\u7EE7\u627F\u7684\u53D9\u8FF0\u54EA\u4E9B\u662F\u6B63\u786E\u7684\uFF1F");
panelSelect.add(select4);
rbSelect41 = new JRadioButton("A. \u5728java\u4E2D\u4E0D\u5141\u8BB8\u5355\u7EE7\u627F\u3002");
btselect4 ="未答";
rbSelect41.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect4 = getSelect4();
}
});
buttonGroup4.add(rbSelect41);
panelSelect.add(rbSelect41);
rbSelect42 = new JRadioButton("B. \u5728java\u4E2D\u4E00\u4E2A\u7C7B\u53EA\u80FD\u5B9E\u73B0\u4E00\u4E2A\u63A5\u53E3\u3002");
btselect4 ="未答";
rbSelect42.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect4 = getSelect4();
}
});
buttonGroup4.add(rbSelect42);
panelSelect.add(rbSelect42);
rbSelect43 = new JRadioButton("C. \u5728java\u4E2D\u4E00\u4E2A\u7C7B\u4E0D\u80FD\u540C\u65F6\u7EE7\u627F\u4E00\u4E2A\u7C7B\u548C\u5B9E\u73B0\u4E00\u4E2A\u63A5\u53E3\u3002");
btselect4 ="未答";
rbSelect43.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect4 = getSelect4();
}
});
buttonGroup4.add(rbSelect43);
panelSelect.add(rbSelect43);
rbSelect44 = new JRadioButton("D. java\u7684\u5355\u4E00\u7EE7\u627F\u4F7F\u4EE3\u7801\u66F4\u53EF\u9760\u3002");
btselect4 ="未答";
rbSelect44.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect4 = getSelect4();
}
});
buttonGroup4.add(rbSelect44);
panelSelect.add(rbSelect44);
select5 = new JLabel("5.\u4E0B\u5217\u5173\u4E8EJava\u8BED\u8A00\u7684\u7279\u70B9\uFF0C\u63CF\u8FF0\u9519\u8BEF\u7684\u662F\uFF1F");
panelSelect.add(select5);
rbSelect51 = new JRadioButton("A. Java\u662F\u8DE8\u5E73\u53F0\u7684\u7F16\u7A0B\u8BED\u8A00");
btselect5 ="未答";
rbSelect51.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect5 = getSelect5();
}
});
buttonGroup5.add(rbSelect51);
panelSelect.add(rbSelect51);
rbSelect52 = new JRadioButton("B. Java\u652F\u6301\u5206\u5E03\u5F0F\u8BA1\u7B97");
btselect5 ="未答";
rbSelect52.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect5 = getSelect5();
}
});
buttonGroup5.add(rbSelect52);
panelSelect.add(rbSelect52);
rbSelect53 = new JRadioButton("C. Java\u662F\u9762\u5411\u8FC7\u7A0B\u7684\u7F16\u7A0B\u8BED\u8A00");
btselect5 ="未答";
rbSelect53.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect5 = getSelect5();
}
});
buttonGroup5.add(rbSelect53);
panelSelect.add(rbSelect53);
rbSelect54 = new JRadioButton("D. Java\u662F\u9762\u5411\u5BF9\u8C61\u7684\u7F16\u7A0B\u8BED\u8A00");
btselect5 ="未答";
rbSelect54.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
btselect5 = getSelect5();
}
});
buttonGroup5.add(rbSelect54);
panelSelect.add(rbSelect54);
labelFill = new JLabel("\u4E8C\u3001\u586B\u7A7A\u9898");
panelSelect.add(labelFill);
labelFill1 = new JLabel("1. \u9762\u5411\u5BF9\u8C61\u7A0B\u5E8F\u8BBE\u8BA1\u7684\u4E09\u4E2A\u7279\u5F81\u662F\uFF1A\u5C01\u88C5\u3001\u591A\u6001\u548C\u4EC0\u4E48\uFF1F");
labelFill1.setBackground(SystemColor.menu);
panelSelect.add(labelFill1);
labelFillPlea1 = new JLabel("\u8BF7\u5728\u4E0B\u65B9\u8F93\u5165\u7B54\u6848\uFF1A");
panelSelect.add(labelFillPlea1);
textFill1 = new JTextField();
textFill1.setHorizontalAlignment(SwingConstants.LEFT);
panelSelect.add(textFill1);
textFill1.setColumns(10);
labelFill2 = new JLabel("2.\u5E03\u5C14\u578B\u5E38\u91CF\u6709\u4E24\u4E2A\u503C\uFF0C\u5B83\u4EEC\u5206\u522B\u662Ffalse\u548C\u4EC0\u4E48\uFF1F");
panelSelect.add(labelFill2);
JLabel labelFillPlea2 = new JLabel("\u8BF7\u5728\u4E0B\u65B9\u8F93\u5165\u7B54\u6848\uFF1A");
panelSelect.add(labelFillPlea2);
textFill2 = new JTextField();
panelSelect.add(textFill2);
textFill2.setColumns(10);
labelFill3 = new JLabel("3.\u7528\u4EC0\u4E48\u4FEE\u9970\u7684\u53D8\u91CF\u53EB\u9759\u6001\u53D8\u91CF\uFF1F");
panelSelect.add(labelFill3);
labelFillPlea3 = new JLabel("\u8BF7\u5728\u4E0B\u65B9\u8F93\u5165\u7B54\u6848\uFF1A");
panelSelect.add(labelFillPlea3);
textFill3 = new JTextField();
panelSelect.add(textFill3);
textFill3.setColumns(10);
panelBtn = new JPanel();
panelBtn.setBackground(Color.WHITE);
panelTitle.add(panelBtn, BorderLayout.SOUTH);
btnsubmit = new JButton("\u8003\u8BD5\u63D0\u4EA4");
/** “开始考试”按钮事件处理 **/
btnsubmit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
//提交时间
btnSubmitAction();
}
});
btnsubmit.setFont(new Font("宋体", Font.PLAIN, 14));
panelBtn.add(btnsubmit);
}
/** “开始考试”按钮事件处理 **/
private void btnSubmitAction(){
dispose();
new ScoreFrame().setVisible(true);
}
/** 获取第一道选择题的答案 **/
private static String getSelect1(){
String select1 = null;
if(rbSelect11.isSelected()){
select1 = rbSelect11.getText();
}else if(rbSelect12.isSelected()){
select1 = rbSelect12.getText();
}else if(rbSelect13.isSelected()){
select1 = rbSelect13.getText();
}else if(rbSelect14.isSelected()){
select1 = rbSelect14.getText();
}
return select1;
}
/** 获取第二道选择题的答案 **/
private static String getSelect2(){
String select2 = null;
if(rbSelect21.isSelected()){
select2 = rbSelect21.getText();
}else if(rbSelect22.isSelected()){
select2 = rbSelect22.getText();
}else if(rbSelect23.isSelected()){
select2 = rbSelect23.getText();
}else if(rbSelect24.isSelected()){
select2 = rbSelect24.getText();
}
return select2;
}
/** 获取第三道选择题的答案 **/
private static String getSelect3(){
String select3 = null;
if(rbSelect11.isSelected()){
select3 = rbSelect31.getText();
}else if(rbSelect32.isSelected()){
select3 = rbSelect32.getText();
}else if(rbSelect33.isSelected()){
select3 = rbSelect33.getText();
}else if(rbSelect34.isSelected()){
select3 = rbSelect34.getText();
}
return select3;
}
/** 获取第四道选择题的答案 **/
private static String getSelect4(){
String select4 = null;
if(rbSelect41.isSelected()){
select4 = rbSelect41.getText();
}else if(rbSelect42.isSelected()){
select4 = rbSelect42.getText();
}else if(rbSelect43.isSelected()){
select4 = rbSelect43.getText();
}else if(rbSelect44.isSelected()){
select4 = rbSelect44.getText();
}
return select4;
}
/** 获取第五道选择题的答案 **/
private static String getSelect5(){
String select5 = null;
if(rbSelect51.isSelected()){
select5 = rbSelect51.getText();
}else if(rbSelect52.isSelected()){
select5 = rbSelect52.getText();
}else if(rbSelect53.isSelected()){
select5 = rbSelect53.getText();
}else if(rbSelect54.isSelected()){
select5 = rbSelect54.getText();
}
return select5;
}
/** 获取学生答案
* 选择题的答案包含完整的选项内容**/
public static String[] getAllAnswers(){
String[] answers = new String[8];
answers[0] = btselect1;
answers[1] = btselect2;
answers[2] = btselect3;
answers[3] = btselect4;
answers[4] = btselect5;
answers[5] = textFill1.getText();
if(answers[5].equals("")){
answers[5] = "未答";
}
answers[6] = textFill2.getText();
if(answers[6].equals("")){
answers[6] = "未答";
}
answers[7] = textFill3.getText();
if(answers[7].equals("")){
answers[7] = "未答";
}
return answers;
}
/** 获取学生答案
* 选择题的答案只包含选项的选号**/
public static String[] getAnswers(){
String[] allAnswers = getAllAnswers();
String[] answers = new String[8];
for(int i=0;i<5;i++){
if(allAnswers[i].equals("未答")){
answers[i] = allAnswers[i];
}else{
answers[i] = allAnswers[i].substring(0, 1);
}
}
for(int i=5;i<8;i++){
answers[i] = allAnswers[i];
}
return answers;
}
}
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