Download the Unit 3 Programming Assignment

import javax.swing.JOptionPane;

public class Quiz {
	
   static int nQuestions = 0; 
   static int nCorrect = 0;


   public static void main(String[] args) {
      String question="Who is the founder of Facebook?\n";
      question += "A. Larry Ellison\n";
      question += "B. Bill Gates \n";
      question += "C. Mark Zuckerberg \n";
      question += "D. Jerry Yang \n";
      question += "E. Thomas J. \n";
	  check(question, "C");
	  
	  String question2 = "Which of the following is fastest land animal?\n";
	  question2 +="A. Cheetah\n";
      question2 +="B. Tiger\n";
      question2 +="C. Kangaroo\n";
      question2 +="D. Elephant\n";
      question2 +="E. Sloth";
	  check(question2, "A");


	  String question3 = "What do the five rings on the Olympic symbol represent?\n";
	  question3 +="A. the five oceans\n";
      question3 +="B. the five Greek Gods\n";
      question3 +="C. the five planets\n";
      question3 +="D. the five countries\n";
      question3 +="E. the five continents";
	  check(question3, "E");
	  
	  JOptionPane.showMessageDialog(null,nCorrect+" correct out of "+nQuestions+" questions.");
   }
   
   static String ask(String question)
   {
	    String answer;
		while(true)
		{
			answer = JOptionPane.showInputDialog(question);
			answer = answer.toUpperCase();
			if(!(answer.equals("A") || answer.equals("B") || answer.equals("C") || answer.equals("D") || answer.equals("E"))) {
			   JOptionPane.showMessageDialog(null,"Invalid answer. Please enter A, B, C, D, or E.");
			} else {
			   return answer;
			}
		}
   }
   
   static void check(String question, String correctAnswer) 
   {
	   nQuestions= nQuestions+1;
	   String answer = ask(question);
	   if(answer.equals(correctAnswer))
	   {
		   nCorrect= nCorrect+1;
		   JOptionPane.showMessageDialog(null,"Correct!");
	   }
	   else
		   JOptionPane.showMessageDialog(null,"Incorrect. The correct answer is "+correctAnswer+".");
   }
}