Code:

TriviaQuestion.java

public class TriviaQuestion
{
// private attributes
private String question, answer;
private int value;

// constructor
TriviaQuestion(String question, String answer, int value) {
this.question = question;
this.answer = answer;
this.value = value;
}

// accessors
public String getQuestion() {
return this.question;
}

public String getAnswer() {
return this.answer;
}

public int getValue() {
return this.value;
}
}

TriviaGame.java

import java.util.*;

public class TriviaGame
{
// member attributes
private TriviaQuestion questions[];
private int score, questionNum;

// constructor
TriviaGame(TriviaQuestion questions[]) {
// to copy data by value
this.questions = Arrays.copyOf(questions, questions.length);
// initial values
this.score = 0;
this.questionNum = 0;
}

// asks the next question and returns true if a question was ansked
public boolean askNextQuestion() {

// increase questionNum as this is the last question that was asked
this.questionNum++;

// return false if it exceeds the number of questions available
if(this.questionNum > questions.length)
return false;

// input stream
Scanner sc = new Scanner(System.in);

// get the next question, answer and points
// questionNum-1 is used because the array index starts from 0
String question = questions[questionNum-1].getQuestion();
String answer = questions[questionNum-1].getAnswer();
int value = questions[questionNum-1].getValue();

// prompt to the user
System.out.println("\nQuestion " + questionNum);
System.out.print("For " + value + " point... ");
System.out.println(question);

// input user answer
String answer1 = sc.nextLine();
// check if answer matches
if(answer1.equalsIgnoreCase(answer)) {

System.out.println("That is correct!");
this.score += value;
}
else
System.out.println("Wrong. The correct answer is " + answer);

// print score and return true
showScore();
return true;
}

// function to print score
public void showScore() {
System.out.println("Your score is " + this.score);
}

// reset values for a new game
public void restart() {

this.score = 0;
this.questionNum = 0;
}

// accessor to get score
public int getScore() {
return this.score;
}
}

TriviaDriver.java

import java.util.Scanner;

public class TriviaDriver
{
// starter main function
   public static void main(String[] args) {

   // initialize Scanner object and pass it to playGame()
   Scanner sc = new Scanner(System.in);
   new Main().playGame(sc);
   }

   // plays games
   public void playGame(Scanner sc) {

   // to keep record of games played and sum of all the scores
   int gamesPlayed = 0, totalScore = 0;
   double avgScore;

   // define TriviaGame object
   TriviaGame tg = new TriviaGame(populateQuestions());

   // play till player says no
   while(true) {

   // play a game
   gamesPlayed++;
   while(tg.askNextQuestion()){}

   // add to totalScore
   totalScore += tg.getScore();
   // reset game
   tg.restart();

   System.out.println("Game over! Would you like to play again?\n(Yes/No):");
   String choice = sc.next();
   if(choice.equalsIgnoreCase("No") || !choice.equalsIgnoreCase("Yes"))
   {
   // end
   break;
   }
   }
   // print the required data
   avgScore = (double) totalScore/gamesPlayed;
   System.out.println("You played " + gamesPlayed + " games and your average score was " + avgScore
   + ". Thank you for playing, have a great day!");
   }

   // function to populate the TriviaQuestion[] array for TriviaGame
   public TriviaQuestion[] populateQuestions() {

   // create TriviaQuestion objects and make an array of them and return
   TriviaQuestion ob1 = new TriviaQuestion
   ("The first Pokemon that Ash receives from Professfor Oak", "pikachu", 1);

   TriviaQuestion ob2 = new TriviaQuestion
   ("Erling Kagge skiied into here alone on January 7, 1993", "south pole", 2);

   TriviaQuestion ob3 = new TriviaQuestion
   ("1997 British band that produced 'Tub Thumper'", "chumbawumba", 2);

   TriviaQuestion ob4 = new TriviaQuestion
   ("Who is the tallest person on record (8 ft. 11 in) that has lived?", "Robert Wadlow", 3);

   TriviaQuestion ob5 = new TriviaQuestion
   ("PT Barnum said 'This way to the _____' to attract people to the exit.", "egress", 1);

   return new TriviaQuestion[]{ob1, ob2, ob3, ob4, ob5};
   }
}