public class PassByReference
{
    public static void main(String args[])
    {
        int ages[] = {10, 20, 30};
        for (int i=0; i<ages.length; i++)
        {
            System.out.println(ages[i]);
        }

        test(ages);
        for (int i=0; i<ages.length; i++)
        {
            System.out.println(ages[i]);
        }
    }

    public static void test(int arr[])
    {
        for (int i=0; i<arr.length; i++)
        {
            arr[i] = i + 100;
        }
    }
}