InputRandomGame.java

import java.util.Random;
import java.util.*;

public class InputRandomGame {
    public static void main(String[] args) {
        intro();
        gameMechanic();
        ask();
    }
    public static void ask() {
        System.out.println("Do you want to play again? (y/n)");
        Scanner lastPrompt = new Scanner(System.in);
        String answer = lastPrompt.nextLine();
        if (answer.equals("y")) {
            gameMechanic();
        } else {
            System.exit(0);
        }
    }
    public static void gameMechanic() {
        int randomInt = answerNum();
        int userGuess = 0;
        while (userGuess != randomInt) { //while user guess isnt the random number, it will keep repeating.
            try { //every time the loop runs, it will TRY to do this
                System.out.println("Enter number:");
                Scanner obj = new Scanner(System.in);
                int guess = obj.nextInt(); //it wants an integer, and if not ...
                userGuess = guess;

                if (randomInt == guess) {
                    System.out.println("Congrats! you guessed your number.");
                } else if (randomInt > guess) {
                    System.out.println("Your input is too low. Try again!");
                } else if (randomInt < guess) {
                    System.out.println("Your input is too high. Try again!");
                }
            }
            catch (InputMismatchException ex) { //... if it's not an integer, it wil CATCH this and print out the input.
                System.out.println("Invalid input, try again.");
            }
        }
    }
    public static int answerNum() {
        Random rand = new Random();
        int maxNum = 100;
        int randInt = rand.nextInt(maxNum);
        return randInt;
    }
    public static void intro() {
        System.out.println("I am thinking of a number between 1-100.");
        System.out.println("Can you guess what it is?");
    }
}