Help Application


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  1. #1
    Join Date
    Mar 2005
    Location
    Airzona
    Posts
    7

    Help Application

    Ok we have to make a 10 question quiz for my computer programming class this is what i have so far and im gettting so pissed off cuz it wont see if the answer they put in is right or not

    Main file-
    public class Quiz
    {
    private String question;
    private String choiceA;
    private String choiceB;
    private String choiceC;
    private String choiceD;
    private String correctAnswer;
    private String rightAnswer;

    Quiz(String q, String CA, String CB, String CC, String CD,
    String cAnswer)
    {
    question = q;
    choiceA = CA;
    choiceB = CB;
    choiceC = CC;
    choiceD = CD;
    correctAnswer = cAnswer;

    }
    public String getQuestion()
    {
    return question;
    }
    public String getChoiceA()
    {
    return choiceA;
    }
    public String getChoiceB()
    {
    return choiceB;
    }
    public String getChoiceC()
    {
    return choiceC;
    }
    public String getChoiceD()
    {
    return choiceD;
    }
    public String getCorrectAnswer()
    {
    return correctAnswer;
    }
    public String getRightAnswer()
    {
    if(answer == correctAnswer)
    rightAnswer = "Correct!";
    if(answer == correctAnswer)
    rightAnswer = " Incorrect";
    }
    }

    Then a second file

    public class ShowQuiz
    {
    static final private String HEADING = "Quiz";
    public static void main(String[] args) throws Exception
    {
    String answer = "";
    char userInput = ' ';
    char correctAnswer = ' ';

    Quiz q1 = new Quiz("What is your name?",
    "\nA. Joe", "\n. Bob" ,
    "C. Jack \n","D. Derek\n", 'A');


    Quiz [] allQ = {q1};

    System.out.print("\t\n" + HEADING);
    System.out.print("\n=============");
    for (int i = 0; i < 1; ++i)
    {
    System.out.print("\n" + allQ[i].getQuestion());
    System.out.print("\n" + allQ[i].getChoiceA());
    System.out.print("\n" + allQ[i].getChoiceB());
    System.out.print("\n" + allQ[i].getChoiceC());
    System.out.print("\n" + allQ[i].getChoiceD());
    }
    System.out.print("Enter your");
    answer = getStr("answer");
    answer = getStr.getChar;

    }
    public static String getStr (String title) throws Exception
    // Returns and input string.
    {
    char ch;

    String str= "";

    System.out.print("\t" + title + ": ");
    do
    {
    ch = (char)System.in.read();
    str += ch;
    }
    while ((int)ch !=13); // 13 is the first byte value of Enter key.
    System.in.read(); // Second byte occupied by the Enter key.

    return str;
    }
    }

    thanks for any help

  2. #2
    Join Date
    Nov 2004
    Location
    Norway
    Posts
    1,560
    I haven't gone through all the code, but this one is strange...
    Code:
    public String getRightAnswer() {
      if(answer == correctAnswer)
        rightAnswer = "Correct!";
      if(answer == correctAnswer)
        rightAnswer = " Incorrect";
    }
    And one more thing;
    string comparison is done using the equals method, if you use the '==' operator
    you are comparing pointer values, not string values.
    eschew obfuscation

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