JAVA Pass by Reference
Rodelio P. Barcenas

The example program belows shows how a pass by reference is executed whenever an array
is passed to a method.

public class byReference{

public static void main(String[] arg){

int[] a;
a = new int[3];
a[0] = 1;
a[1] = 2;
a[2] = 3;

System.out.println(a[0]);
System.out.println(a[1]);
System.out.println(a[2]);

change(a);

System.out.println(a[0]);
System.out.println(a[1]);
System.out.println(a[2]);

}

public void change(int[] x){

x[0] = 3;
x[1] = 2;
x[0] = 1;

}

}

NOTE: When the array is passed to the change method, the value is not passed but only
the location in the memory where it reside.
If an array is passed to a method, a manipulation to the passed array will result to a change
in the original array. In pass by value, the original value remains unchanged.