Monte Carlo Simulation a basic program

MonteCarloSimulation.java

import java.util.Scanner;

//Monte Carlo Simulation.
public class MonteCarloSimulation {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double numberOfSimulation = 1000000;
        int numberOfHits = 0;
        for (int i = 0; i < numberOfSimulation; i = i + 1) {
            double x = Math.random() * 2 - 1;
            double y = Math.random() * 2 - 1;
            if(x * x + y * y < 1) numberOfHits = numberOfHits + 1;
        }
        double pi = 4.0 * numberOfHits / numberOfSimulation;
        System.out.print("The value of PI is: " + pi);
    }

}