Number Guessing Game

import java.util.Scanner; //imports a thing

public class LessonFive {
    public static void main(String []args) {
        int Num;
        Num = (int) (Math.random() * 999 + 1);
        //the above make Num somewhere between 1 and 1000
        Scanner keyboard = new Scanner(System.in);
        int guess = -1;

        while (guess != Num) {
            System.out.print("Enter a guess:  ");
            guess = keyboard.nextInt();
            //allows the user to guess a number
            System.out.println(guess);

            if(guess == Num) {
                System.out.println("You're rignt!!");
            }
            if(guess < Num) {
                System.out.println("Too low!");
            }
            if(guess > Num) {
                System.out.println("Too high!");
            //tells user if too high, too low, or correct
            }
        }
    }

}