array in Java

public class testJava{    public static void main(String[] args) {        int arr[] = {1, 2, 3};        display_array(arr);    }    private static void display_array(int arr[])    {        for (int i = 0; i < arr.length; i++) {            System.out.print(arr[i] + " ");        }    }}

1 2 3