JAVA考试系统程序代码

JAVA考试系统程序代码

登录界面代码：

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.sql.*;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JLabel;

import javax.swing.*;

public class Login extends Frame implements ActionListener

{

Label lbuser,lbpwd;

Label lbinstrution=new Label("抱歉,该用户名不存在!");

Label lbinstrution1=new Label("抱歉,该用户口令不正确!");

TextField tfuser,tfpwd;

Button btnok,btnreg;

String s1,s2;//用来取文本框中的字符串.

public Login()

{

super("考生登录系统界面");

setBounds(340,190,400,300);

setLayout(null);

setVisible(true);

Image image = Toolkit.getDefaultToolkit().getImage("./images/Login.jpg"); Icon icon = new ImageIcon(image); //添加全景图

JLabel lbwhole=new JLabel(icon);

lbinstrution.setFont(new Font("华文行楷",Font.BOLD,14));

lbinstrution1.setFont(new Font("华文行楷",Font.BOLD,14));

lbuser=new Label("用户名",Label.CENTER);

lbuser.setFont(new Font("华文行楷",Font.BOLD,12));

lbpwd=new Label("口令",Label.CENTER);

lbpwd.setFont(new Font("华文行楷",Font.BOLD,12));

tfuser=new TextField(16);

tfpwd=new TextField(16);

tfpwd.setEchoChar('*');

btnok=new Button("登录");

btnok.setForeground(Color.red);

btnok.setFont(new Font("华文行楷",Font.BOLD,12));

btnok.setBackground(new Color(213,219,246));

btnreg=new Button("注册");

btnreg.setForeground(Color.red);

btnreg.setFont(new Font("华文行楷",Font.BOLD,12));

btnreg.setBackground(new Color(213,219,246));

addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

dispose();

System.exit(0);

}

});

add( lbwhole);

add(lbinstrution);add(lbinstrution1);

add( lbuser);add( lbpwd);

add(tfuser); add(tfpwd);//添加组件

add(btnok); add(btnreg);

lbinstrution.setBounds(130,64,152,18);

lbinstrution.setForeground(Color.red);

lbinstrution.setVisible(false);

lbinstrution1.setBounds(130,182,152,18);

lbinstrution1.setVisible(false);

lbinstrution1.setForeground(Color.red);

lbwhole.setBounds(0, 0,400, 300);

lbuser.setBounds(100,100,65,17);

lbpwd.setBounds(100,150,65,17);

tfuser.setBounds(190,100,100,20);

tfpwd.setBounds(190,150,100,20);

btnok.setBounds(100,220,60,20);

btnreg.setBounds(260,220,60,20);

btnok.addActionListener(this);//添加系列监听器

btnreg.addActionListener(this);//添加系列监听器

}

public static void main(String[] args)

{

Login f=new Login(); }

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==btnok)

{if(tfuser.getText().equals("")||tfpwd.getText().equals("")) JOptionPane.showConfirmDialog(null,"用户名和密码不能为空"); else{

s1=tfuser.getText();s2=tfpwd.getText();

try {

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con=DriverManager.getConnection("jdbc:odbc:SQL","sa","");

Statement fsg=con.createStatement();

ResultSet rsuser=fsg.executeQuery("use Date select username,password from admin ");

while(rsuser.next())

{

//System.out.print(rspwd.getString(1)+"\t");

//System.out.print(rsname.getString(2)+"\t");

// System.out.println(rsname+"/n");

String rs=rsuser.getString("username");

String rs2=rsuser.getString("password");

if(s1.equals(rs)&&(s2.equals(rs2)))//只有用户名与密码都与之匹配才能进入考试

{new Testexam();

System.out.println("successs");

break;}

if((s1.equals(""))&&(!(s1.equals(rs))))//提示你没有用户名.//取不等的方法直接在前面加"!".

{lbinstrution.setVisible(true);}

if(s1.equals(rs)&&!s2.equals(rs2))//提示你你的密码错误.

{lbinstrution1.setVisible(true);}

}

rsuser.close();

fsg.close();

con.close();

} catch (ClassNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (SQLException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

}//if的结束标记符.

if (e.getSource()==btnreg)

new Register( );

}

}

注册界面代码：

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import https://www.360docs.net/doc/7919042076.html,.*;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JLabel;

public class Register extends Frame implements ActionListener

{

Label lbuser,lbpwd,lbpwdensure;

TextField tfuser,tfpwd,tfpwdensure;

Button btnok,btnre;

String name,pwd0,pwd1;//用来取文本框中的字符串.

Label lbinstrution2=new Label("抱歉,用户名不能为空!");

Label lbinstrution3=new Label("抱歉,前后输入的密码不一致!");

public Register()

{

super("考生注册系统界面");

setBounds(340,190,400,300);

setLayout(null);

setVisible(true);

lbinstrution2.setVisible(false);

lbinstrution2.setFont(new Font("华文行楷",Font.BOLD,14));

lbinstrution3.setVisible(false);

lbinstrution3.setFont(new Font("华文行楷",Font.BOLD,14));

Image image = Toolkit.getDefaultToolkit().getImage("./images/Register.jpg"); Icon icon = new ImageIcon(image); //添加全景图

JLabel lbwhole=new JLabel(icon);

lbuser=new Label("用户名",Label.CENTER);

lbuser.setFont(new Font("华文行楷",Font.BOLD,12));

lbpwd=new Label("口令",Label.CENTER);

lbpwd.setFont(new Font("华文行楷",Font.BOLD,12));

lbpwd.setFont(new Font("华文行楷",Font.BOLD,12));

lbpwdensure=new Label("确认口令");

lbpwdensure.setFont(new Font("华文行楷",Font.BOLD,12)); tfuser=new TextField(16);

tfpwd=new TextField(16);

tfpwd.setEchoChar('*');

tfpwdensure=new TextField(16);

tfpwdensure.setEchoChar('*');

btnok=new Button ("提交");

btnre=new Button("返回");

addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

dispose();

System.exit(0);

}

});

add(lbwhole);

add(lbinstrution2);add(lbinstrution3);

lbwhole.setBounds(0, 0,400, 300);

add(lbuser); add(lbpwd);add(lbpwdensure);

add(tfuser); add(tfpwd);add(tfpwdensure);//添加组件

add(btnok); add(btnre);

lbinstrution2.setBounds(130,54,146,18);

lbinstrution2.setForeground(Color.red);

lbinstrution3.setBounds(94,214,192,18);

lbinstrution3.setForeground(Color.red);

lbuser.setBounds(100,80,60,17);

lbpwd.setBounds(100,130,60,17);

lbpwdensure.setBounds(100,180,60,17);

tfuser.setBounds(190,80,90,20);

tfpwd.setBounds(190,130,90,20);

tfpwdensure.setBounds(190,180,90,20);

btnok.setBounds(90,240,60,20);

btnok.setForeground(Color.red);

btnok.setBackground(new Color(213,219,246));

btnok.setFont(new Font("华文行楷",Font.BOLD,12)); btnre.setBounds(250,240,60,20);

btnre.setForeground(Color.red);

btnre.setBackground(new Color(213,219,246));

btnre.setFont(new Font("华文行楷",Font.BOLD,12)); btnok.addActionListener(this);//添加提交监听器

btnre.addActionListener(this);//添加系列监听器

}

public static void main(String[] args) {

Register f=new Register();

}

public void actionPerformed(ActionEvent e)

{

name=tfuser.getText();pwd0=tfpwd.getText();pwd1=tfpwdensure.getText();

if(e.getSource()==btnok)

{

try {

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con=DriverManager.getConnection("jdbc:odbc:SQL","sa","");

Statement fsg=con.createStatement();

//ResultSet rsname=fsg.executeQuery("use Teacher select * from admin ");

//int n=fsg.executeUpdate("delete from admin where username='thanki'" );

if(!(name.equals("")))//&&(!(pwd.equals("")))//只有用户名与密码都不为空才能进行添加

{

//int s1=Integer.parseInt(name);int s2=Integer.parseInt(pwd0);

fsg.executeUpdate("insert into admin values('"+name+"' ,'"+pwd0+"')" );

System.out.println("successs");

}

if(name.equals(""))//提示用户名不能为空.

{lbinstrution2.setVisible(true);}

if(!(pwd0.equals(pwd1)))//提示你你前后的密码不一致.

{lbinstrution3.setVisible(true);}

fsg.close();

con.close();

} catch (ClassNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (SQLException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}////if的结束标记符.

if(e.getSource()==btnre)

new Login();

}

}

考试答题界面代码：

//定义线程,千万不要把定义的初始变量到构造函数以外.否则构造函数就会出错.

import java.awt.event.*;

import java.awt.*;

import java.io.*;

import java.util.Calendar;

import java.util.Date;

import javax.swing.*;

class Testexam extends Frame implements ActionListener,ItemListener,Runnable {

Thread ttime=new Thread(this);

int hour,minute,second=00,unsecond,totaltime=5400;

Panel pnor=new Panel();

Panel pwes=new Panel();

Panel pcen=new Panel();//东南面板被标签图片所取代了.

public String []strtm=new String [200];

String correctAnswer="",selectedcode="",selectedanswer="",wrongNumber="";//定义要用的字符串量

String rightAnswer ="";//仅仅在看看答案时调用它。实质它等同于"correctAnswer" public int n=0;

public int l;//用来记题号的下标.

public int score,count=0;//定义计分与统计所做的正确题数.

Checkbox ck[]=new Checkbox[5];//答案的四个复选按钮

Choice cetimu=new Choice ();

Choice cexuti=new Choice ();

File file1=new File("./timu");

Label lbtime=new Label(" ");

Label lchoiceti =new Label("-----------------欢迎您来参加考试-----------------------");

Label lanswer=new Label("答案选项:");

Label lbactivexuti=new Label("选题:");

Image image = Toolkit.getDefaultToolkit().getImage("./images/peas.jpg");

Icon icon = new ImageIcon(image); //添加东图

JLabel lbpiceast=new JLabel(icon);

Image image1 = Toolkit.getDefaultToolkit().getImage("./images/psou.jpg");

Icon icon1 = new ImageIcon(image1); //添加南图

JLabel lbpicsou=new JLabel(icon1);

CheckboxGroup cg=new CheckboxGroup();

TextArea ta=new TextArea("", 10,10,TextArea.SCROLLBARS_VERTICAL_ONLY);

JButton btnstar=new JButton(new ImageIcon("./images/picstar.jpg"));

JButton btnpractice=new JButton(new ImageIcon("./images/picpractice.jpg")); Button btnuper=new Button("上一题");

Button btnnex=new Button("下一题");

Button btnanswer = new Button("看看答案");

Button btnover=new Button("结束考试");

Button btnstop=new Button("结束练习");

public Testexam ()

{

super ("考试系统");

setBounds(130,80,800,600);

setLayout(null);

setVisible(true);

ImageIcon YouImg=new ImageIcon("iconimage.jpg");

setIconImage(YouImg.getImage());

//ttime.start();//启动线程式

addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

dispose();

System.exit(0);

}

});

//布局好所有的面板并赋予某些变量部分空间并添加组件：

add(pnor);pnor.setBounds(0,0,800,100);pnor.setLayout(null);

pnor.setBackground( new Color(213,219,246));

pnor.add(lchoiceti);lchoiceti.setBounds(220,35,350,25);

lchoiceti.setFont(new Font("华文行楷",Font.BOLD,18));

lchoiceti.setForeground(Color.blue);

add(pwes);pwes.setBounds(0,100,120,400); pwes.setLayout(null); pwes.setBackground(new Color(219,209,158));

add(pcen);pcen.setBounds(100,100,580,400); pcen.setLayout(null); pcen.setBackground(Color.yellow);

add(lbpiceast);this.lbpiceast.setBounds(680,100,124,400);

add(lbactivexuti);lbactivexuti.setBounds(721,160,40,17);

lbactivexuti.setFont(new Font("华文行楷",Font.BOLD,15));

lbactivexuti.setForeground(new Color(49,85,182));

add(cexuti);

cexuti.addItemListener(this);//加所有组件的监听器.

cexuti.setVisible(true);//先设置选题为隐藏,当.................. cexuti.setBounds(695,185,90,60);cexuti.setForeground(new

Color(49,85,182));

cexuti.setFont(new Font("华文行楷",Font.BOLD,15));

int []init=new int[75];

for(int k=1;k<=init.length;k++)

cexuti.add(" "+"第"+k+"道题");

add(lbpicsou);lbpicsou.setBounds(0,500,800,100);

ck[0]=new Checkbox("A",cg,false);

ck[0].setFont(new Font("华文行楷",Font.BOLD,15));

ck[1]=new Checkbox("B",cg,false);

ck[1].setFont(new Font("华文行楷",Font.BOLD,15));

ck[2]=new Checkbox("C",cg,false);

ck[2].setFont(new Font("华文行楷",Font.BOLD,15));

ck[3]=new Checkbox("D",cg,false);

ck[3].setFont(new Font("华文行楷",Font.BOLD,15));

ck[4]=new Checkbox("E",cg,false);

ck[4].setFont(new Font("华文行楷",Font.BOLD,15));

pwes.add(lanswer) ; lanswer.setBounds(30,35,70,35);

lanswer.setFont(new Font("华文行楷",Font.BOLD,15));

lanswer.setBackground(Color.ORANGE);lanswer.setAlignment(Label.CENTER); pwes.add(ck[0]);ck[0].setBounds(40,100,50,30);

pwes.add(ck[1]);ck[1].setBounds(40,145,50,30);

pwes.add(ck[2]);ck[2].setBounds(40,190,50,30);

pwes.add(ck[3]);ck[3].setBounds(40,235,50,30);

pwes.add(ck[4]);ck[4].setBounds(40,285,50,30);

ck[4].setVisible(false);

ck[0].addItemListener(this);//加四个选项的监听器

ck[1].addItemListener(this);

ck[2].addItemListener(this);

ck[3].addItemListener(this);

pwes.add(btnstar);btnstar.setBounds(30,285,70,45);

btnstar.addActionListener(this);//加开始菜单的监听器.

//btnstar.setForeground(Color.red);btnstar.setBackground(Color.pink); pwes.add(btnpractice);btnpractice.setBounds(30,345,70,45);

btnpractice.addActionListener(this);

btnpractice.setForeground(Color.red);btnpractice.setBackground(Color.pink); pcen.add(ta);ta.setBounds(25,5,550,390);

//ta.setBackground(Color.white);

add(btnuper); btnuper.setBounds(100,530,90,40);

btnuper.addActionListener(this);//加上"上一题"的监听器

btnuper.setForeground(Color.red);btnuper.setBackground(Color.orange);

btnuper.setFont(new Font("华文行楷",Font.BOLD,20));

add(btnnex); btnnex.setBounds(260,530,90,40);

btnnex.addActionListener(this); // 加上"下一题"的监听器

btnnex.setFont(new Font("华文行楷",Font.BOLD,20));

btnnex.setForeground(Color.red);btnnex.setBackground(Color.orange);

add(btnanswer); btnanswer.setBounds(400,530,90,40);

btnanswer.setForeground(Color.red);btnanswer.setBackground(Color.orange); btnanswer.addActionListener(this); // 加上"标准答案"的监听器

btnanswer.setFont(new Font("华文行楷",Font.BOLD,20));

add(btnover); btnover.setBounds(540,530,90,40);

add(btnstop); btnstop.setBounds(540,530,90,40);btnstop.setVisible(false);//默认隐藏"结束练习"起来

btnover.addActionListener(this);btnstop.addActionListener(this);// 加上"结束考试"、"结束练习"的监听器

btnover.setForeground(Color.red);btnover.setBackground(Color.orange);

btnstop.setForeground(Color.red);btnstop.setBackground(Color.orange);

btnover.setFont(new Font("华文行楷",Font.BOLD,20));

btnstop.setFont(new Font("华文行楷",Font.BOLD,20));

pnor.add(cetimu);cetimu.addItemListener(this);//加所有组件的监听器.

cetimu.setBounds(190,65,400,120);

cetimu.setFont(new Font("华文行楷",Font.BOLD,14));

cetimu.setBackground(Color.lightGray);

pnor.add(lbtime);lbtime.setBounds(683,60,70,25);

lbtime.setBackground(Color.white);

lbtime.setFont(new Font("华文行楷",Font.BOLD,15));

//lbtime.setText(" "+hour+":"+minute+":"+unsecond);

String[] str1=new String[100];

str1=file1.list();

for(int i=0;i

{cetimu.add(str1[i]);

}

this.validate();

readQuestions();

}

String str;

public void itemStateChanged(ItemEvent e)

{

if(e.getItemSelectable()==cetimu)

{

str=cetimu.getSelectedItem();

}

if(e.getItemSelectable()==cexuti)

{

l=(cexuti.getSelectedIndex());//选题的索引计值.

//if(cexuti.getSelectedIndex()==l)//定义一个下标索引值

//{

n=l;

ta.setText(strtm[n]);

}//}

if(e.getSource()==ck[0])//选答案实现小事件。

{

selectedcode="A";

}

if(e.getSource()==ck[1])

{

selectedcode="B";

}

if(e.getSource()==ck[2])

{

selectedcode="C";

}

if(e.getSource()==ck[3])

{

selectedcode="D";

}

if((ck[0].getState()==false)&&(ck[1].getState()==false)&&(ck[2].getState()==fals e)&&(ck[3].getState()==false))

selectedcode="?";//没选答案就跳过去了。

//System.out.println(selectedcode);

}

public void actionPerformed(ActionEvent e)

{

if (e.getSource()==btnstar)

{ btnpractice.setVisible(false);

readQuestions();

ttime.start();

cetimu.setEnabled(false);

btnanswer.setEnabled(false);

}

if (e.getSource()==btnpractice)

{ btnstar.setVisible(false);

readQuestions();

ttime.start();

cetimu.setEnabled(false);

cetimu.setEnabled(false);

btnover.setVisible(false);

btnstop.setVisible(true);

}

if(e.getSource()==btnuper)

{

this.ta.setText(this.strtm[this.n]);

if(this.n>this.strtm.length-1||this.n<0)

return ;

n--;

ta.setText(strtm[n]);

}

if (e.getSource()==btnnex)

{

selectedanswer+=selectedcode;

selectedcode="?";

ck[4].setState(true);

this.ta.setText(this.strtm[this.n]);

if(this.n>this.strtm.length-1||this.n<0)

return ;

n++;

ta.setText(strtm[n]);

this.btnanswer.setLabel("看看答案");

}

if (e.getSource()==btnanswer)

{ getAnswer();

// int m=str.indexOf("、");//获取每一题的答案，先获取题号。

//String s2=str.substring( 0,m);//通过截取标号来获取题号，但这里有点失效。 //int c=Integer.parseInt(s2);

char f=rightAnswer.charAt(n);

btnanswer.setLabel(" "+f);}

if (e.getSource()==this.btnover)

{ttime.stop();

this.btnuper.setEnabled(false);

this.btnnex.setEnabled(false);

this.btnstar.setEnabled(false);

this.ta.setEditable(false);

cexuti.setEnabled(false);

btnstar.setEnabled(false);

btnover.setEnabled(false);

getScore(); }

if (e.getSource()==btnstop)

{

if(n<=75)

{selectedanswer+=selectedcode;

ttime.stop();

this.btnuper.setEnabled(false);

this.btnnex.setEnabled(false);

this.btnpractice.setEnabled(false);

this.ta.setEditable(false);

this.cexuti.setEnabled(false);

this.btnanswer.setEnabled(false);

btnstop.setEnabled(false);

getScore(); }

if(n>75)

{

ttime.stop();

this.btnuper.setEnabled(false);

this.btnnex.setEnabled(false);

this.btnpractice.setEnabled(false);

this.ta.setEditable(false);

this.cexuti.setEnabled(false);

this.btnanswer.setEnabled(false);

btnstop.setEnabled(false);

getScore(); }

}

}

//构造读题方法。

public void getAnswer()

{

try {

FileReader fr=new FileReader("./answer/"+"答案"+str);//只读答案方法。 BufferedReader bufr1=new BufferedReader(fr,4096);

String s1;

while (( s1=bufr1.readLine())!=null)

{

rightAnswer+=s1;

}

bufr1.close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public void readQuestions()

{

try {

FileReader fr=new FileReader("./timu/"+str);

BufferedReader bufr=new BufferedReader(fr,4096);

ta.setText("");

String texts="",s;

this.strtm[0]="";

while (( s=bufr.readLine())!=null)

{

ta.setFont(new Font("宋体",Font.PLAIN,14));

texts+=s+"\n";

}

this.strtm=texts.split("●");

ta.setText(strtm[0]);

bufr.close();

} catch (IOException e1) {System.out.println(e1.toString());} }

public void run()

{

try{

while(true)

{

totaltime--;

second++;

hour=totaltime/3600;

minute=(totaltime-3600*hour)/60;

second=(totaltime-3600*hour-60*minute);

Thread.sleep(1000);

lbtime.setText(" "+hour+":"+minute+":"+second);

}

}

catch(InterruptedException excepton){}

}

public static void main(String[] args)

{

Testexam f= new Testexam ();

}

public void getScore()//算分统计方法.

{

score=0;

try {

FileReader fr=new FileReader("./answer/"+"答案"+str);

BufferedReader bufr1=new BufferedReader(fr,4096);

String s1;

while (( s1=bufr1.readLine())!=null)

{

correctAnswer+=s1;

}

bufr1.close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

int len1=selectedanswer.length() ;

int len2=correctAnswer.length() ;

int len=Math.min(len1,len2);

for(int i=0;i

if(selectedanswer.charAt(i)==correctAnswer.charAt(i))

{score++;}

else

{wrongNumber+=(i+1+"、");}

}ta.setText("你做错第"+wrongNumber+"道题目"+"\n你的得分:"+score+"\n标准答案:\n"+correctAnswer);

}

}

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