Codecademy Challenge - Magic 8 Ball 'Game'

Magic8.java

import java.util.Random;
import java.util.ArrayList;
import java.util.Arrays;

public class Magic8{
  // Magic 8 Ball usually has a 20 sided dice inside with 10 positive dice sides, 5 negative dice sides and 5 vague responses
  
  // Below defines positive/negative/vague responses
  ArrayList<String> positiveResponses = new ArrayList<String> (Arrays.asList("As I see it yes", "It is certain", "It is decidedly so", "Most likely", "Outlook good", "Signs point to yes", "Without a doubt", "You may rely on it", "Yes definitely", "Absolutely"));

  ArrayList<String> negativeResponses = new ArrayList<String> (Arrays.asList("Definitely not", "Outlook not so good", "Very doubtful", "My sources say no", "Don't count on it"));

  ArrayList<String> vagueResponses = new ArrayList<String> (Arrays.asList("Ask again later", "Better not tell you now", "Cannot predict at this moment in time", "Concentrate and ask again", "Why are you asking me?"));

  // Below generates a random number from 0-19
  public int randomNumber(){
    Random rand = new Random();
    int randomRoll = rand.nextInt(20);
    return randomRoll;
  }

  public static void main(String[] args){
    Magic8 roll = new Magic8();
    // Below defines a new ArrayList which has all reponses combined in one ArrayList
    ArrayList<String> allResponses = new ArrayList<String>();
    allResponses.addAll(roll.positiveResponses);
    allResponses.addAll(roll.negativeResponses);
    allResponses.addAll(roll.vagueResponses);

    int response = roll.randomNumber();
    System.out.println("Let me think about that one...\n \n" + allResponses.get(response));
  }
}