Dice Rolls

package dicerolls;
import java.util.Scanner;
import java.util.Random;

public class DiceRolls {

    public static void main(String[] args) {
        int[] outcomes = new int[18];
        Scanner input = new Scanner(System.in);
        int numRolls;
        Random rand = new Random();
        int outcome;
        System.out.print("How many rolls? ");
        numRolls = input.nextInt();

        for (int roll = 0; roll < numRolls; roll++) {
            outcome = (rand.nextInt(6)+ 1 ) + (rand.nextInt(6)+ 1 ) + (rand.nextInt(6) + 1 );
            outcomes[outcome] +=1;
        }
        for (int i =3; i <=18; i++) {
            System.out.println(i + ": " + outcomes[i]);
        }
    }

}