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kavneet rekhi
urgent help for inserting database in a project
0 Answer(s)      a year and 6 months ago
Posted in : JDBC


I need some urgent help i have made java application for conducting a quiz which displays 25 mcq's and then the result at the end.I need to add simple database connectivity to it just a single table i guess which would have sno,username result and percentage and order by percentage descending so that basically we can view the rank list at the end of all the participants here is my code:

import java.awt. *;
import java.awt. event.*;
import javax.swing.*;

class QuestionSeries{
static String info ="IT QUIZ  \n \nINSTRUCTIONS:\nThere are 25 questions in this test and 10 minutes to complete them all.\nThe finish button is highlighted in blue when you reach the end of the test. \nClicking the finish button will display the results with the correct answers marked in light red.  \n \nThe timecounter  begins when you click on the 'start' button \n \nBest of luck!\n\n";

static String []question ={"Question 1:\nWho invented Poking?\n",
"Question 2:\n This game was developed by a Finland based company for the iOS, Android and Symbian3 platforms. It even won the Crunchies'11 runners up award for the 'Best Time Sink Application'. A newer version of this game was recently launched, with no difference, but with monkeys. Identify the game.\n",
"Question 3: \n Lion is an OS by which company\n",
"Question 4:\n Ashish Kashyap is the CEO of which company?\n",
"Question 5:\n The world's first X invented by Tom Cranston, Fred Longstaff and Kenyon Taylor working on the Royal Canadian Navy's DATAR project in 1952. It used a standard Canadian five-pin bowling ball. Identify x\n",
"Question 6:\n This was invented by David Bradley and is known as the ?three-finger-salute?. What am I talking about?\n",
"Question 7:\n[W]e came across the word 'X', and it was just perfect. The definition was 'a short burst of inconsequential information? what am I talking about. ?\n",
"Question 8:\n What was the codename for ?Kinect for Xbox360\n",
"Question 9:\n What is the simplest and the most used encryption technique. It uses substitution\n",
"Question 10:\n Which of the following cannot be connected using PS/2 port\n",
"Question 11:\nWhat is Google's URL shortener called ?\n",
"Question 12:\n Which company owns Alexa?\n",
"Question 13:\n What would you call a list of contacts that the user deems are acceptable to receive e-mails from and should not be sent to the trash folder?\n",
"Question 14:\n What does the ISO-9660 standard relate to\n",
"Question 15:\nExpand MMORPG\n",
"Question 16:\n Who coined the term 'bit' and 'software\n",
"Question 17:\nHTML was originally a subset of another document-formatting standard. Name it\n",
"Question 18:\nIn PHP, the function 'ECHO' is the same as which other function?\n",
"Question 19:\nwhat is the name given to Android 4.0\n",
"Question 20:\n Shadow , Speedy , Bashful , Pokey are characters from which famous game?\n",
"Question 21:\n This programming language was published by Niklaus Wirth named in honor of a French mathematician and philosopher.\n",
"Question 22:\n What  is the name given to something that the  computer  will automatically use unless you tell it otherwise?\n",
"Question 23:\n PCI Stands for\n",
"Question 24:\n Linux kernel is written in? \n",
"Question 25:\n Which was the first computer virus?\n"
};


static String [][]answers ={{"Jerry Yang\n","Mark Zuckerberg\n","Sergey M. Brin\n","Eduardo saverin\n"},{"Winds of steel \n"," \n Angry Birds","Temple Run\n"," \n Replica Island\n"},{" \n Microsoft\n","Red hat \n","Apple \n","Oracle"},{" \n Ibibo \n","HCL \n"," \n TCS\n"," \n Yahoo\n"},{" \n Trackball\n"," \nMouse \n"," \n USB \n"," \n Joystick \n"},{" \n XYZ \n"," \nE-Mail\n"," \n Joystick \n","Ctrl+Alt+Del \n"},{" \nOrkut\n"," \nFacebook\n"," \nYoutube\n"," \nTwitter\n"},{" \nLady Bird\n"," \nPaxos\n"," \nProject Natal\n"," \n Paxos\n"},{" \nROT13\n"," \nWEP\n"," \n WPA \n"," \n Caesar Cipher \n"},{" \nMouse \n"," \nKeyboard\n"," \nJoystick\n"," \nTrackball\n"},{" \ndwarfURL.com\n"," \nTiny.cc\n"," \nBit.ly\n"," \nGoo.gl\n"},{" \nAmazon\n"," \nApple\n"," \nGoogle \n"," \nMicrosoft\n"},{" \nBlock list\n"," \n black lsit \n"," \nE-mail white list\n"," \nRealtor list\n"},{"Hard Disk \n"," \nData cable\n"," \nCD-Rom\n"," \n Mother Board\n"},{" \nMultimode online roller play games\n"," \nMy Mode of racing port game\n"," \nMassive,multiplayer or road play games\n"," \n Massively multiplayer online role playing games\n"},{" \nBarry Collin\n"," \nBill Gates\n"," \n2 Algore \n"," \n John Tukey\n"},{" \n Java\n"," \n SGML\n"," \nAJAX\n"," \nOASIS\n"},{" \nEdit\n"," \nRun\n"," \n Compile \n"," \n Print\n"},{" \nFroyo\n"," \nGingerbread\n"," \nIcecream Sandwich\n"," \n Honeycomb \n"},{" \n Contra \n"," \n Packman\n"," \nMario\n"," \nAladdin\n"},{" \nC\n"," \n Pascal\n"," \nJava\n"," \nCOBOL\n"},{" Specification\n"," \nWildcard\n"," \nDefault\n"," \n Rule\n"},{" Personal Computer Interface\n"," Peripheral Computer Interconnect\n","Peripheral Component Interconnect\n"," Peripherical Communication Interface\n"},{" \n C++\n"," \n C \n"," \n Java \n"," \n PHP \n"},{"Brain\n","Trojan\n","Melisa\n"," \n Bug \n"} };

static int []n = {2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
static String []choice= {"2","2","3","1","1","4","4","3","4","3","4","1","3","3","4","4","2","4","3","2","2","3","3","2","1"};
static int tally = choice.length;
static String testtitle="Online IT Quiz";
static int timeLimit =10;
static int passMark = 15;
}

/* OnlineTest class */

public class OnlineTest extends JFrame{
    static String studentname ="";
    static int TOTAL=0;

    static {
    try{
    TOTAL = QuestionSeries.tally;       
    /*  The input window */
    studentname = JOptionPane.showInputDialog("Enter your name: ");
    if(studentname.length() < 1) studentname = "Anonymous   ";
    else studentname = studentname.trim() + " ";
    }catch(NullPointerException e){ System.exit(0); }
    }   

        int seconds, minutes;
        int quesnum, itemCheck, mark; 
    final String TESTTITLE = QuestionSeries.testtitle;
        final int TIMELIMIT = QuestionSeries.timeLimit;
        final int PASS = QuestionSeries.passMark;
        String []answers = new String[TOTAL];
    JButton []choice_button = new JButton[6];
    JTextArea answerboxes[] = new JTextArea[4];
    JCheckBox []boxes = new JCheckBox[4];
        JTextPane pane = new JTextPane();
    JLabel student, choose, message, timecounter, testresult;
        boolean start_test, check_answer, allowRestart, finishtest;
    Northwindow panelNorth = new Northwindow();
    Southwindow panelSouth = new Southwindow();
    Centerwindow panelCenter = new Centerwindow();

/*  OnlineTest Constructor */
    protected OnlineTest(){
        for (int i=0; i<TOTAL; i++) answers[i] ="";
        getContentPane().setLayout(new BorderLayout() );
        getContentPane().add("North", panelNorth);
        getContentPane().add("South", panelSouth);
        getContentPane().add("Center", panelCenter);
        int width = 0, height=0; 
            if(java.awt.Toolkit.getDefaultToolkit().getScreenSize().getWidth()<799){width=      640;        height=460; }
            else {width=720; height=540; }
        setSize(width,height);
        Dimension dim = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setLocation((dim.width-width)/2, (dim.height-height)/2);
    }

/**
**  Northwindow class
**/

class Northwindow extends JPanel{

/**
**  Northwindow constructor 
**/
    public Northwindow(){
        setLayout(new GridLayout(2,2));
        setBackground(new Color(230, 230, 255));
        student = new JLabel("\t Welcome : "+studentname+" to the Online IT Quiz");
        student.setFont(new Font("",Font.BOLD,16) );
        message = new JLabel();
        message.setForeground(Color.blue);
        add(student);
        add(message);
        add(new JLabel("               ") );
        add(new JLabel("               ") );
        setBorder(BorderFactory.createEtchedBorder() );
    }
}

/**
**  Southwindow class
**/
class Southwindow extends JPanel{
    public Southwindow(){
        String []key = {"","start:","next:","finish:","check next:","check previous:"};
            for(int i=0; i<choice_button.length; i++)
                   {
                choice_button[i] = new JButton(key[i]);
                choice_button[i].addActionListener(new ActionHandler() );
                if(i !=0)add(choice_button[i]);
              }
        setBorder(BorderFactory.createEtchedBorder() );
    }
}

/**
**  Centerwindow class 
**/
class Centerwindow extends JPanel{

    public Centerwindow(){
        setLayout(new GridLayout(1,2) );
        JScrollPane west = new JScrollPane(pane);       
        pane.setForeground(Color.red);         
        pane.setFont(new Font ("monospaced",0,12) );
        pane.setText(QuestionSeries.info);
        pane.setEditable(false);
        JPanel east = new JPanel();
        east.setLayout(new BorderLayout() );    
        JPanel northEast = new JPanel();
        northEast.setBackground(new Color(230, 230, 255) ); 
        east.add("North", northEast);
        JPanel westEast = new JPanel();
        westEast.setLayout(new GridLayout(6,1) );
        east.add("West", westEast);
        JPanel centerEast = new JPanel();
        centerEast.setLayout(new GridLayout(6,1) );
        centerEast.setBackground(new Color(255,255,200));
        east.add("Center", centerEast);       
            timecounter = new JLabel("     There are "+TOTAL+" questions in total");
            timecounter.setFont(new Font ("Arial",Font.BOLD,16) );
            timecounter.setForeground(new Color(0,90,20) );
            northEast.add(timecounter);
            westEast.add(new JLabel(" "));
        String []boxs = {" A ", " B ", " C ", " D "};
            for(int i=0; i<boxes.length; i++) { 
                boxes[i] = new JCheckBox(boxs[i]);
                boxes[i].addItemListener(new ItemHandler() );
                westEast.add(boxes[i]);
            }
        westEast.add(new JLabel() );
        choose = new JLabel("    CHOOSE CORRECT ANSWERS");
        choose.setBorder(BorderFactory.createEtchedBorder() );
        centerEast.add(choose);
        JScrollPane panes[] = new JScrollPane[4];
            for(int i=0; i<answerboxes.length; i++){
                answerboxes[i] = new JTextArea();
                answerboxes[i].setBorder(BorderFactory.createEtchedBorder() );
                answerboxes[i].setEditable(false);
                answerboxes[i].setBackground(Color.white);
                answerboxes[i].setFont(new Font("",0,12) );
                answerboxes[i].setLineWrap(true);      
                answerboxes[i].setWrapStyleWord(true);
                panes[i] = new JScrollPane(answerboxes[i]);
                centerEast.add(panes[i]);
            }
        if(TIMELIMIT >0)testresult = new JLabel(studentname+",   You have only : "+TIMELIMIT+" minutes to complete.");   
        else testresult = new JLabel("     There is no time limit for this test");
        testresult.setBorder(BorderFactory.createEtchedBorder() );
        centerEast.add(testresult);
    add(west);
    add(east);
    }
}

/**
**  ActionHandler class to handle all the action events from the buttons. 
**/

class ActionHandler implements ActionListener{

/* actionPerformed method */
    public void actionPerformed(ActionEvent evt){
      String source = evt.getActionCommand();
        if(source.equals("start:")){
            choice_button[1].setVisible(false);
            start_test=true;
            allowRestart=true;
            if(TIMELIMIT >0)new Timer(); // inner Timer class 
            panelSouth.remove(choice_button[1]); //start
            displayquestion();            
        }
    if(start_test){
        if(source.equals("previous:"))  {                       
            recordanswer();
            quesnum--;
            if(quesnum ==  -1) quesnum=TOTAL-1;
            checkteststatus();
            displayquestion(); 
        }
        if(source.equals("next:")) {
            recordanswer();
            quesnum++;            
            if(quesnum ==  TOTAL-1) finishtest=true;
            if(quesnum ==  TOTAL) quesnum=0;
            checkteststatus();
            displayquestion(); 
        }
        if(source.equals("finish:")) {
            if (finishtest){
                recordanswer();
                quesnum = 0;

                choice_button[4].setBackground(Color.lightGray);
                timecounter.setForeground(Color.blue);
                timecounter.setFont(new Font ("Arial",0,14) );
                start_test=false; 
                check_answer=true;
                panelSouth.add(choice_button[0]);
                mark_ques();
                displayquestion();
                checkteststatus();
                calculateResult();
            }
            else  JOptionPane.showMessageDialog(null,"Cycle through all questions before pressing finish",
                                                                 "User Message",JOptionPane.INFORMATION_MESSAGE);
        }
    } 

    if (check_answer){
        if(source.equals("check next:")) {
            quesnum++;
            if(quesnum ==  TOTAL) quesnum=0;
            mark_ques();
            displayquestion();
            checkteststatus();
        }
        if(source.equals("check previous:")) {
            quesnum--;
            if(quesnum ==  -1) quesnum=TOTAL-1;
            mark_ques();
            displayquestion();
            checkteststatus();
        }
    }
    validate();        
    }

/* Timer class */

class Timer extends Thread implements Runnable{
    public Timer(){
        new Thread(this).start();
    }

    public void run() {
        while(start_test){
            try {
               Thread.sleep(1000);
               seconds++;
                if(seconds % 60 == 0 && seconds != 0){
                    seconds -= 60;
                    minutes++;
                }
                timecounter.setText("    Time Counter:  "+minutes+" mins : "+seconds+" secs ");
                if(minutes==TIMELIMIT){
                    start_test=false;
                    endTest();
                }
            }
            catch(InterruptedException ex)  { System.out.print(ex); }
        }
    }
}

/* checkteststatus method */

        public void checkteststatus(){
        if((quesnum ==  TOTAL-1)&&(start_test))choice_button[3].setBackground(Color.green);
        else choice_button[4].setBackground(Color.lightGray);
          if(answers[quesnum].length() >0){ 
            for(int i=0; i<answers[quesnum].length(); i++)
            boxes[Integer.parseInt(answers[quesnum].substring(i,i+1) )-1].setSelected           (true);
        }
        else for(int i=0; i<boxes.length; i++)boxes[i].setSelected(false);
        }

/* displayquestion method */

    public void displayquestion(){
        int j = quesnum+1;
        pane.setText(QuestionSeries.question[quesnum]);
        if(start_test)message.setText("Question "+j+" out of "+TOTAL);
        for (int i=0; i<4; i++)answerboxes[i].setText(QuestionSeries.answers[quesnum][i]);
        if(start_test){
            String temp="";
            if(QuestionSeries.n[quesnum]==1) temp="<html>†††Choose only         <b>ONE</b>  Option</html>";
            else if(QuestionSeries.n[quesnum]==2) temp="<html>††Choose <b>TWO       </b> Options</html>";
        else if(QuestionSeries.n[quesnum]==3) temp="<html>††Choose <b>THREE</b>         Options</html>";
            else temp="<html>††<b>ALL are true</b> true</html>";
        choose.setText(temp);
        }
        else {
        timecounter.setText("    Your choices are shown in the boxes");
            choose.setText("    Correct answers are marked in light red.");
        }
    }

/* record answer method */

    public void recordanswer(){
        String tmp = "";
        for(int i=0; i<boxes.length; i++) if(boxes[i].isSelected() ) tmp +=i+1;
        answers[quesnum] = tmp;
    }

/* endTest method */ 

    public void endTest(){
        message.setText("TIME OVER: please press 'finish'");
        choice_button[2].setEnabled(false); 
        choice_button[3].setEnabled(false); 
        choice_button[4].setEnabled(true); 
    }

/* mark_ques() method to highlight correct answers */

    public void mark_ques(){
        for(int i=0; i<answerboxes.length; i++) answerboxes[i].setBackground(Color.white);
        for(int i=0; i<QuestionSeries.choice[quesnum].length(); i++)
            answerboxes[Integer.parseInt(QuestionSeries.choice[quesnum].substring(i,i+1))-1].setBackground(Color.red);
        if(QuestionSeries.choice[quesnum].equals(answers[quesnum])) message.setText("Answer correct, well done!");
        else message.setText("Sorry, you got this one wrong.");
    }


    public void calculateResult(){
        mark=0;
        double temp=0.0;
        java.text.DecimalFormat df = new java.text.DecimalFormat("#0.#");
        for(int i=0; i<TOTAL; i++)if(QuestionSeries.choice[i].equals(answers[i]))mark++;
        temp=(double)mark;
        if(temp/TOTAL*100 >=PASS) testresult.setText("  Well done "+studentname.substring(0,studentname.indexOf(' ') )+", you passed");
        else testresult.setText("  Better luck next time "+studentname.substring(0,studentname.indexOf(' ') ) );
        student.setText(" Final score for "+studentname+":  "+mark+" out of "+TOTAL+":  "+df.format(temp/TOTAL*100)+"%");
        new Resultwindow().show();
    }
}

/* Resultwindow class */

class Resultwindow extends JFrame{
        Resultwindow() {
        super( studentname+" results: " +(mark*100/TOTAL >=PASS?"PASS":"FAIL") );
        Container cont = getContentPane();
        cont.setLayout(new GridLayout(TOTAL/2+3,5,2,5) );
        cont.setBackground(new Color(255,220,255) );
        cont.add(new JLabel("  "+"Marks:    "+mark+"/"+TOTAL+": "+"Percentage:  "+(mark*100/TOTAL)+"%") );
           for(int i=0; i<3; i++)cont.add(new JLabel() );
          String temp[] = new String[TOTAL];
            for(int i=0; i<TOTAL; i++){
                if(QuestionSeries.choice[i].equals(answers[i])) temp[i]="correct";
                else temp[i]="wrong";
            }
            for(int i=0; i<TOTAL; i++) cont.add(new JLabel("  Question "+(i+1)+":  "+temp       [i]) );
        pack();
        setLocation(200,200);
    }
}

/* ItemHandler class */

class ItemHandler implements ItemListener{
    public void itemStateChanged(ItemEvent evt){
      if(start_test){
        for(int i=0; i<boxes.length; i++) if(boxes[i].isSelected() ) itemCheck++; 
        if(itemCheck > QuestionSeries.n[quesnum]){
            java.awt.Toolkit.getDefaultToolkit().beep();
            if(QuestionSeries.n[quesnum]==1)    JOptionPane.showMessageDialog(null,"<html><font         size='4' color='00308a'><center>"+
        "There is only "+QuestionSeries.n[quesnum]+" possible<br> answer to question "+(quesnum+1)+
                    "<html>","User Information Message",JOptionPane.INFORMATION_MESSAGE);
            else JOptionPane.showMessageDialog(null,"<html><font size='4' color='00308a'><center>"+
                    "There are only "+QuestionSeries.n[quesnum]+" possible<br> answers to question "+(quesnum+1)+
                    "<html>","User Information Message",JOptionPane.INFORMATION_MESSAGE);
        }
        itemCheck=0;
      }   
    }
}

/*  main method */

    public static void main(String [] args){
        OnlineTest frame = new OnlineTest();
        frame.setTitle("    "+QuestionSeries.testtitle);
        frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
        frame.setVisible(true);
    }
}

someone please help me out quickly i am searching a lot..creating teh database si ok but the connectivity is a problem here is the project file


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pls help me sir its urgent  thanks for reply, but i am getting this error pls help me its urgent type Exception report message description The server encountered an internal error () that prevented it from
Help Very Very Urgent - JSP-Servlet
Help Very Very Urgent  Respected Sir/Madam, I am sorry..Actually... contains all the ID's present in the database.. When I click or select any... requirements.. Please please Its Very very very very very urgent... Thanks
urgent help needed in JDBC AND JAVA GUI - JDBC
urgent help needed in JDBC AND JAVA GUI  my application allows... want any one to help me convert from scanner to java GUI for this code, and connect it to mysql database thanks the code is //1st class for creating
inserting into mysql database with uid to be primary key and autoincrement
inserting into mysql database with uid to be primary key and autoincrement  hello, i am new to jsp and facing problem in creating a database entry...; Here is the code of inserting values from jsp form to database
want help regarding a project
want help regarding a project  hiii this is hemangi and I want guidance that I am working on a project of hospital management system so I want guidance that how can i implement that in swings or with other frame work? and any
CAN ANYONE SOLVE THIS FOR ME. URGENT HELP NEEDED. PLEASE HELP
CAN ANYONE SOLVE THIS FOR ME. URGENT HELP NEEDED. PLEASE HELP   The Task Write a class whose objects will represent students... marks. Create a new project. Then create a new class called ‚
CAN ANYONE SOLVE THIS FOR ME. URGENT HELP NEEDED. PLEASE HELP
CAN ANYONE SOLVE THIS FOR ME. URGENT HELP NEEDED. PLEASE HELP   Write a class whose objects will represent students.The class should have three... project. Then create a new class called √Ę‚?¨ň?Student√Ę‚?¨‚
Please help me... its very urgent
Please help me... its very urgent  Please send me a java code to check whether INNODB is installed in mysql... If it is there, then we need to calculate the number of disks used by mysql
getting error while inserting values in database
getting error while inserting values in database  AddUser.java import java.io.*; import java.sql.*; import javax.servlet.*; import...) { out.println("An Error Had occurred while accessing the database
Help With My Java Project?
Help With My Java Project?  Write a console program that repeatedly prompts the user to enter data until they type done (any case, Upper, Lower... to put it all together to make it work. please help import
banking project database
banking project database  i want to make a project on banking using applet pls help me out in making the project   JSP Bank Application
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Help in making school project  Description: A doctor has recently opened a surgery and is getting concerned at the amount of time some of his patients are waiting before he gets time time see them. The doctor has asked you
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Need help with my project  Uses a while loop to perform the following steps: -Prompt the user to input two integers: firstNum and secondNum where secondNum is at least 10 greater than firstNum, both numbers are positive integers
Project realated help - JSP-Servlet
Project realated help   Hi sir i need your assistance em stuck at a point,actualy i am making final year project,i am making OTRS system in java em... database is inserted in DB a message should shown (i.e you have new ticket) and if i
project on php and database
project on php and database   write code i have five tables and i want to build them as form html then link between them as database and php and make query between them those five tables Table of suppliers Source
inserting data from radio buttons to database - JSP-Servlet
inserting data from radio buttons to database  hi, my problem... will ask some question and students have to answer those question with the help... friends? Poor Average Good How much help was textbook? Poor
very urgent : Iam unable to code this program plz help me - RMI
very urgent : Iam unable to code this program plz help me  Write a Multi-user chat server and client.  Hi friend, Chat server is a standlone application that is made up the combination of two-application, server
i am inserting an image into database but it is showing relative path not absolute path
i am inserting an image into database but it is showing relative path...("thank u for registration"); out.println("ur values are inserted into database... got error java.io.filenotfoundexception....... please go through it and help me
i am inserting an image into database but it is showing relative path not absolute path
i am inserting an image into database but it is showing relative path...("thank u for registration"); out.println("ur values are inserted into database... got error java.io.filenotfoundexception....... please go through it and help me
 

 

 

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