Software Architecture: Design and Implementation - Coursework Example

This test class checks if the connection is made.

import  java.net.*  ;

import  java.util.*  ;

import  java.io.*  ;

import  java.math.*;

class  TestClassCall  extends  Thread

{

            Socket  s;

            TestClassCall(Socket  s)

            {

                        this.s=s;

            }

            public  void  run()

            {

                        try{

                        OutputStream  o  =  s.getOutputStream()  ;

                        PrintWriter  p  =  new  PrintWriter(o)  ;

                        p.println("You  are  the  lucky  caller");

                        createFile  c=  new  createFile();

            c.createFilemain();//creating  the  questions  file

            String  file="questions.txt";

            String  ans;

            int  j=0;

            while(j<3)

                        {

                        FileHandler  h  =  new  FileHandler(s,  file)  ;

                        h.start()  ;//call  filehandler  to  pass  files  to  client

                        j++;//increment  every  time  a  file  is  passed

                        try  {

                        InetAddress  inet  =  InetAddress.getLocalHost()  ;

                        try  {

                                               Socket  sc  =  new  Socket(inet,  2002);

                                               InputStream  inc  =  sc.getInputStream();

                        BufferedReader  dc  =  new  BufferedReader(new  InputStreamReader(inc));

            ans  =  dc.readLine();

            System.out.println(ans)  ;

                        if(j==1)//for  the  first  file

                        {

                                   if  (ans=="cbabbaabac")//if  answer  to  first  file  is  correct

                                   {

                        int  fnum;

                        fnum=  1+((int)(Math.random()*3));

                        switch  (fnum)

                        {

                        case  1:  file="finalq1.txt";

                        createFile  c1=  new  createFile();

            c1.createFile1();

                        break;

                        case  2:  file="finalq2.txt";

                        createFile  c2=  new  createFile();

            c2.createFile2();

                        break;

                        case  3:  file="finalq3.txt";

                        createFile  c3=  new  createFile();

                        c3.createFile3();

                        break;

                        default:  file="finalq1.txt";

                        createFile  c4=  new  createFile();

            c4.createFile1();

            break;

                        }

                                   }

                                   else

                                   {

                                               p.println("Unlucky,  try  again");

                                               j=3;

                                   }

                                   }

                        if(j==2)//the  second  time  a  file  is  called  i.e  the  final  q

                        {

                        if  (ans=="a")

            p.println("You  have  won  $10,000,  congratulations");

            else

            p.println("You  have  answered  incorrectly.  your  prize  is  a  tv");

            j=3;

                        }

                        }

                        catch  (IOException  e)

                                   {

                                               System.out.println("Failed  connection  to  server")  ;

                                   }

                        }

                        catch  (UnknownHostException  e)  {

                        System.out.println("Unknown  Host  ")  ;

                        e.printStackTrace();

                        }

            }

                        }

                        catch  (IOException  e)  {

            System.out.println("an  exception  occurred:  "  +  e.getMessage());

            e.printStackTrace();

            }

                        }

                        }

import java.io.*;

import java.util.*;

import java.util.ListIterator;

import java.awt.event.*;

import javax.swing.*;

2. This test class checks the proper functioning of the multiple-choice tests.

public class Swing_Tester extends javax. swing.JFrame {

    ArrayList questions = new ArrayList();

    ArrayList answers = new ArrayList();

    ArrayList explainations = new ArrayList();

    int iTotalQuestionsAnswered=0;

    int iTotalQuestionsAnsweredCorrectly=0;

    int iCurrentQuestion;

    boolean fQuestionWasAnswered;

    /** Creates new form Swing_Tester */

    public Swing_Tester() {

        initComponents();

    }

    String replace(String sOriginal,

          String sSearchFor,

          String sReplacement) {

      if (sOriginal.equals("")) return "";

      String sNewString = "";

      int iPosOfStr = sOriginal.indexOf(sSearchFor,0);

      int iLastPos = 0;

      while (iPosOfStr != -1) {

        sNewString += sOriginal.substring(

            iLastPos,iPosOfStr) +

            sReplacement;

        iLastPos = iPosOfStr + sSearchFor.length();

        iPosOfStr = sOriginal.indexOf(sSearchFor,iLastPos);

      }

      sNewString += sOriginal.substring(iLastPos);

      return sNewString;

    }

    private void setNewQuestion() {

        txtQuestion.setText("");

        iCurrentQuestion=(int)(Math.random()*questions.size());

        txtQuestion.setText(txtQuestion.getText()

          + "\nQuestion:\n");

        txtQuestion.setText(txtQuestion.getText()

          + (String)questions.get(iCurrentQuestion));

        txtQuestion.setText(txtQuestion.getText() + "\n");

    }

    private void printScore() {

        float rScore = (float)iTotalQuestionsAnsweredCorrectly /

            (float)iTotalQuestionsAnswered * 100F;

        rScore = java.lang.Math.round(rScore*10F)/10F;

        txtQuestion.setText(txtQuestion.getText()

            + "\nYour score is: " + rScore + "%");

        txtQuestion.setText(txtQuestion.getText() + "\n"

            + iTotalQuestionsAnsweredCorrectly

            + " out of " + iTotalQuestionsAnswered);

    }

    private void showExplaination(){

        txtQuestion.setText(txtQuestion.getText()

            + "Explaination:\n"

            + (String)explainations.get(iCurrentQuestion));

    }

    private void checkAnswer() {

        txtQuestion.setText(txtQuestion.getText()

            + "\n" + txtAnswer.getText());

        if (txtAnswer.getText().equals(

            (String)answers.get(iCurrentQuestion))) {

          txtQuestion.setText(txtQuestion.getText()

            + "\n     Right!\n");

          iTotalQuestionsAnswered++;

          iTotalQuestionsAnsweredCorrectly++;

        } else {

          txtQuestion.setText(txtQuestion.getText()

            + "\nWrong.");

          txtQuestion.setText(txtQuestion.getText()

            + "\nThe correct answer is: '"

            + (String)answers.get(iCurrentQuestion)

            + "' not '" + txtAnswer.getText() + "'\n");

          iTotalQuestionsAnswered++;

        }

    }

    //

    /** This method is called from within the constructor to

     * initialize the form.

     * WARNING: Do NOT modify this code. The content of this method is

     * always regenerated by the Form Editor.

     */

    private void initComponents() {

        jScrollPane4 = new javax.swing.JScrollPane();

        txtQuestion = new javax.swing.JTextArea();

        txtAnswer = new javax.swing.JTextField();

        setFont(new java.awt.Font("Arial", 0, 10));

        addWindowListener(new java.awt.event.WindowAdapter() {

            public void windowOpened(java.awt.event.WindowEvent evt) {

                formWindowOpened(evt);

            }

            public void windowClosing(java.awt.event.WindowEvent evt) {

                exitForm(evt);

            }

        });

        txtQuestion.setEditable(false);

        txtQuestion.setLineWrap(true);

        txtQuestion.setWrapStyleWord(true);

        jScrollPane4.setViewportView(txtQuestion);

        getContentPane().add(jScrollPane4,

                 java.awt.BorderLayout.CENTER);

        txtAnswer.setText("Type your answer here and press enter.  Press enter a second time to move to the next question.");

        txtAnswer.addKeyListener(new java.awt.event.KeyAdapter() {

            public void keyPressed(java.awt.event.KeyEvent evt) {

                txtAnswerKeyPressed(evt);

            }

        });

        getContentPane().add(txtAnswer, java.awt.BorderLayout.SOUTH);

        pack();

        java.awt.Dimension screenSize =

              java.awt.Toolkit.getDefaultToolkit().getScreenSize();

        setSize(new java.awt.Dimension(600, 300));

        setLocation((screenSize.width-600)/2,

              (screenSize.height-300)/2);

    }

    private void txtAnswerKeyPressed(java.awt.event.KeyEvent evt) {

        if (evt.getKeyCode() == KeyEvent.VK_ENTER) {

            if (fQuestionWasAnswered) {

                txtAnswer.setText("");

                setNewQuestion();

            } else {

                checkAnswer();

                showExplaination();

                printScore();

            }

            fQuestionWasAnswered = !fQuestionWasAnswered;

        }

    }

    private void formWindowOpened(java.awt.event.WindowEvent evt) {

        // Add your handling code here:

        BufferedReader oBufferedReader;

        String sLineOfText;

        try {

          oBufferedReader = new BufferedReader(

              new FileReader("fill.txt"));

          String sSection = "q";

          String sLineToAdd = "";

          while((sLineOfText = oBufferedReader.readLine())!= null) {

            if (sLineOfText.indexOf("<q>")>=0) {

                sSection = "q";

                sLineOfText = replace(sLineOfText, "<q>","");

            } else if (sLineOfText.indexOf("<a>")>=0) {

                sSection = "a";

                sLineOfText = replace(sLineOfText, "<a>","");

            } else if (sLineOfText.indexOf("<e>")>=0) {

                sSection = "e";

                sLineOfText = replace(sLineOfText, "<e>","");

            }

            if (sLineOfText.indexOf("</q>")>=0) {

                sSection = "/q";

                sLineOfText = replace(sLineOfText, "</q>","");

            } else if (sLineOfText.indexOf("</a>")>=0) {

                sSection = "/a";

                sLineOfText = replace(sLineOfText, "</a>","");

            } else if (sLineOfText.indexOf("</e>")>=0) {

                sSection = "/e";

                sLineOfText = replace(sLineOfText, "</e>","");

            }

            if (sLineToAdd.equals("")) {

                sLineToAdd = sLineOfText;

            } else {

                sLineToAdd = sLineToAdd + "\n" + sLineOfText;

            }

            if (sSection.equals("/q")) {

              questions.add(sLineToAdd);

              sLineToAdd = "";

              sSection = "";

            } else if (sSection.equals("/a")) {

              answers.add(sLineToAdd);

              sLineToAdd = "";

              sSection = "";

            } else if (sSection.equals("/e")) {

              explainations.add(sLineToAdd);

              sLineToAdd = "";

              sSection = "";

            }

          }

          oBufferedReader.close();

        } catch (FileNotFoundException ioe) {

          JOptionPane.showMessageDialog(this,

              "Couldn't open the file fill.txt.",

              "Question file error:", JOptionPane.INFORMATION_MESSAGE);

          System.exit(0);

        }catch (IOException ioe1) {

          JOptionPane.showMessageDialog(this,

              "Now that's something different",

              "Question file error:", JOptionPane.INFORMATION_MESSAGE);

          System.exit(0);

        };

        txtAnswer.requestFocus();

        txtAnswer.setSelectionStart(0);

        txtAnswer.setSelectionEnd(txtAnswer.getText().length());

        //Show the first question.

        setNewQuestion();

    }

    /** Exit the Application */

    private void exitForm(java.awt.event.WindowEvent evt) {

        System.exit(0);

    }

    /**

    * @param args the command line arguments

    */

    public static void main(String args[]) {

        new Swing_Tester().show();

    }

    // Variables declaration - do not modify

    private javax.swing.JScrollPane jScrollPane4;

    private javax.swing.JTextArea txtQuestion;

    private javax.swing.JTextField txtAnswer;

    // End of variables declaration

}

//End of code----------------