import java.util.List;

import java.util.ArrayList;

import java.util.Iterator;

import java.io.IOException;

public class JavaQuiz{

public static void main(String[] args){

List<QuizEntry> quizList = new ArrayList<QuizEntry>();

quizList.add(new QuizEntry("What's the latest version of JDK?",

new String[]{"1.8", "1.7", "1.6", "1.9"},

'A'));

quizList.add(new QuizEntry("How many primitive types does Java have?",

new String[]{"4", "8", "6", "9"},

'B'));

quizList.add(new QuizEntry("What are you learning Java for?",

new String[]{"Hobby", "Java Development", "Android Development", "Make a living"},

'C'));

Iterator<QuizEntry> iterator = quizList.iterator();

while(iterator.hasNext()){

QuizEntry quizEntry = iterator.next();

System.out.println(quizEntry.question);

for(int i=0;i<quizEntry.answers.length; i++){

System.out.println(QuizEntry.answerIndicator[i] + ". " + quizEntry.answers[i]);

}

// prompt the user to answer

System.out.print("Enter your answer: ");

try{

int userAnswer = -1;

do{

userAnswer = System.in.read();

if(!isEscapeCharacter(userAnswer)){

if(userAnswer == quizEntry.answer){

System.out.println("Congratunations, you are right.");

}else {

System.out.println("You are wrong.");

}

System.out.println();

}

}while(isEscapeCharacter(userAnswer)); // Consume the system related carrige return character.

}catch(IOException ioe){

ioe.printStackTrace();

}

}

}

static boolean isEscapeCharacter(int character){

return character == '\r' || character=='\n';

}

}

class QuizEntry{

String question;

String[] answers;

char answer;

static final char[] answerIndicator = {'A', 'B', 'C', 'D'};

QuizEntry(String question, String[] answers, char answer){

this.question = question;

this.answers = answers;

this.answer = answer;

}

}