Question

*Java*

Given the attached Question class and quiz text, write a driver program to input the questions from the text file, print each quiz question, input the character for the answer, and, after all questions, report the results.

Write a Quiz class for the driver, with a main method.

There should be a Scanner field for the input file, a field for the array of Questions (initialized to 100 possible questions), and an int field for the actual number of questions.

The constructor should instantiate the Question array, open the file with the Scanner, and input the Question array from the input file. Note that one of the constructors for the Question class takes a Scanner parameter and initializes an entire question from the Scanner. There is a blank line at the end of the file, so hasNextLine() would work for the loop. After the input loop, the count field should be the number of questions.

A give() method should declare and instantiate a Scanner for keyboard input, counters for correct and incorrect answers, an array (or ArrayList) of ints for the numbers that were incorrect, and an array (or ArrayList) of chars for the answers that were incorrect. It should loop through each question and print it out, prompt for the answer, count it if it is right and save the question number and wrong answer in the two arrays (or ArrayLists) if it is wrong. After this loop, it should print out the number correct and the numbers that were wrong, with the wrong answers.

The main method should just instantiate a Quiz and call its give() method.

This is the quiz

Formed on a diskette (or hard drive) during initialization.
source code
images
sectors
storage units
c
The CPU consists of:
Control Unit, Temporary Memory, Output
Control Unit, Arithmetic Logic Unit, Temporary Memory
Input, Process, Storage, Output
Input, Control Unit, Arithmetic Logic Unit, Output
b
OOP stands for:
Observable Object Programming
Object Observed Procedures
Object Oriented Programming
Object Overloading Practices
c
Output printed on paper.
softcopy
hardcopy
source code
software
b
A binary digit (1 or 0) signifying "on" or "off".
bit
byte
megabyte
gigabyte
a
Our decimal number 44, when represented in binary, is:
101100
101010
111000
10100
a
Byte code is the machine language for a hypothetical computer called the:
Java Byte Code Compiler
Java Byte Code Interpreter
Java Virtual Machine
Java Memory Machine
c
Equals 8 bits.
megabyte
gigabyte
sector
byte
d
Java allows for three forms of commenting:
// single line, ** block lines, /*/ documentation
// single line, /*...*/ block lines, /**...*/ documentation
/ single line, /* block lines, ** documentation
// single line, //...// block lines, //*...*// documentation
b
To prepare a diskette (or hard drive) to receive information.
format
track
interpret
boot
a
In Java, the name of the class must be the same as the name of the .java file.
false
true - but case sensitivity does not apply
true - but additional numbers may be added to the name
true
d
The name Java was derived from
a cup of coffee
an acronym for JBuilder Activated Variable Assembly
an acronym for Juxtapositioned Activated Variable Actions
an acronym for John's Answer for Various Accounts
a
Programs that tell a computer what to do.
harware
software
hard copy
projects
b
RAM stands for _________.
Read Anytime Memory
Read Allocated Memory
Random Access Memory
Random Allocated Memory
c
Several computers linked to a server to share programs and storage space.
library
grouping
network
integrated system
c
The four equipment functions of a computer system.
Input, Process, Control Unit, Output
Input, Control Unit, Arithmetic Logic Unit, Output
Input, Process, Storage, Output
Input, Process, Library Linking, Output
c
Translates and executes a program line by line.
compiler
interpreter
linker
control unit
b
The physical components of a computer system.
control unit
hardware
software
ALU
b

Answer 1

Program:

import java.util.*;
import java.io.*;

//Question class
class Question
{
   private String q[] = new String[6];
  
   //constructor
   public Question(Scanner sc)
   {
       for(int i=0; i<6; i++)
           q[i] = sc.nextLine();
   }
  
   //return question as a String
   public String toString()
   {
       String s = "";
       for(int i=0; i<5; i++)
           s = s + q[i] + "\n";
      
       return s;
   }
  
   //return answer
   public char getAnswer()
   {
       return q[5].charAt(0);
   }
}

//Quiz class
class Quiz
{
   //give() method to give the quiz
   public static void give(Question q[], int n)
   {
       //create instance of Scanner class
       Scanner sc = new Scanner(System.in);
      
       int count = 0, j = 0;
       int incorrect[] = new int[n];
       char incorrectAns[] = new char[n];
      
       //loop to take the quiz
       for(int i=0; i<n; i++)
       {
           System.out.print(q[i]);
           System.out.print("Answer: ");
           char ans = sc.next().charAt(0);
           if(ans==q[i].getAnswer())
               count++;
           else
           {
               incorrect[j] = i+1;
               incorrectAns[j] = q[i].getAnswer();
               j++;
           }
           System.out.println();
       }
      
       //print the report
       System.out.println("\nNumber of correct answer: " + count);
       System.out.println("Number of wrong answer: " + (n-count));
       for(int i=0; i<j; i++)
       {
           System.out.println("Question number: " + incorrect[i] + "\t" +
               " Correct answer: " + incorrectAns[i]);
       }
      
       //close the Scanner
       sc.close();
   }
  
   //main method
   public static void main (String[] args) throws IOException
   {
       //create instance of Scanner class anf open the file
       Scanner sc = new Scanner(new File("quiz.txt"));
      
       //array of questions
       Question q[] = new Question[100];
       //number of questions
       int nq = 0;
      
       //read the quiz file
       while(sc.hasNextLine())
       {
           q[nq] = new Question(sc);
           nq++;
       }
      
       give(q, nq);
      
       //close the Scanner
       sc.close();
   }
}

Output:

Formed on a diskette (or hard drive) during initialization.
source code
images
sectors
storage units
Answer: c

The CPU consists of:
Control Unit, Temporary Memory, Output
Control Unit, Arithmetic Logic Unit, Temporary Memory
Input, Process, Storage, Output
Input, Control Unit, Arithmetic Logic Unit, Output
Answer: b

OOP stands for:
Observable Object Programming
Object Observed Procedures
Object Oriented Programming
Object Overloading Practices
Answer: c

Output printed on paper.
softcopy
hardcopy
source code
software
Answer: b

A binary digit (1 or 0) signifying "on" or "off".
bit
byte
megabyte
gigabyte
Answer: c

Our decimal number 44, when represented in binary, is:
101100
101010
111000
10100
Answer: b

Byte code is the machine language for a hypothetical computer called the:
Java Byte Code Compiler
Java Byte Code Interpreter
Java Virtual Machine
Java Memory Machine
Answer: c

Equals 8 bits.
megabyte
gigabyte
sector
byte
Answer: b

Java allows for three forms of commenting:
// single line, ** block lines, /*/ documentation
// single line, /*...*/ block lines, /**...*/ documentation
/ single line, /* block lines, ** documentation
// single line, //...// block lines, //*...*// documentation
Answer: c

To prepare a diskette (or hard drive) to receive information.
format
track
interpret
boot
Answer: b

In Java, the name of the class must be the same as the name of the .java file.
false
true - but case sensitivity does not apply
true - but additional numbers may be added to the name
true
Answer: c

The name Java was derived from
a cup of coffee
an acronym for JBuilder Activated Variable Assembly
an acronym for Juxtapositioned Activated Variable Actions
an acronym for John's Answer for Various Accounts
Answer: b

Programs that tell a computer what to do.
harware
software
hard copy
projects
Answer: c

RAM stands for _________.
Read Anytime Memory
Read Allocated Memory
Random Access Memory
Random Allocated Memory
Answer: b

Several computers linked to a server to share programs and storage space.
library
grouping
network
integrated system
Answer: c

The four equipment functions of a computer system.
Input, Process, Control Unit, Output
Input, Control Unit, Arithmetic Logic Unit, Output
Input, Process, Storage, Output
Input, Process, Library Linking, Output
Answer: b

Translates and executes a program line by line.
compiler
interpreter
linker
control unit
Answer: c

The physical components of a computer system.
control unit
hardware
software
ALU
Answer: b

Number of correct answer: 7
Number of wrong answer: 11
Question number: 5 Correct answer: a
Question number: 6 Correct answer: a
Question number: 8 Correct answer: d
Question number: 9 Correct answer: b
Question number: 10 Correct answer: a
Question number: 11 Correct answer: d
Question number: 12 Correct answer: a
Question number: 13 Correct answer: b
Question number: 14 Correct answer: c
Question number: 16 Correct answer: c
Question number: 17 Correct answer: b