Programming - practice

package javaapplication75;

import java.util.Scanner;

public class JavaApplication75 {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("Enter your array size:");
        int size = input.nextInt();
        int ar[] = new int[size];
        int sum = 0;
        for (int i = 0; i < ar.length; i++) {
            System.out.println("Enter number for index " + i);
            ar[i] = input.nextInt();
            sum += ar[i];
        }
        System.out.println("Sum of the array: " + sum);
    }
}