Chapter 9, Problem 1PE

Program Plan Intro

Quiz

Program plan:

Filename: “Question.java”

This program file is used to define a class “Question”. In the code,

• Define a class “Question”.
  • Declare class variables “text” and “answer”.
  • Define a constructor “Question()”.
    • Initialize the “text” and “answer”.
  • Define a method “setAnswer()”.
    • Initialize the value of “answer”.
  • Define a method “checkAnswer()”.
    • Return the value.
  • Define a method “display()”.
    • Print the value of “text”.

Filename: “NumericQuestion.java”

This program file is used to define a class “NumericQuestion” as extending from “Question”. In the code,

• Define a class “NumericQuestion”.
  • Declare the members of the class.
  • Define a constructor “NumericQuestion()”.
    • Call the method “super()”.
  • Define a method “setAnswer()”.
    • Set the value of “answer”.
  • Define a method “checkAnswer()”.
    • Set the value of “numericResponse”.
    • Return the value.

Filename: “QuestionDemo.java”

This program file is used to define a class “QuestionDemo” to test the class “NumericQuestion”. In the code,

• Define a class “QuestionDemo”.
  • Define a method “main()”.
  • Declare an array of objects.
  • Set a question to “quiz[0]”.
  • Set the answer to “quiz[0]”.
  • Set numeric question to “question”.
  • Set the answer for numeric question.
  • Set “question” to “quiz[1]”.
  • Create an object of “Scanner” class.
  • Iterate a “for” loop.
    • Call the method “display”.
    • Prompt the user to enter the answer.
    • Scan for the value.
    • Call the method “checkAnswer()” and print the result.