// **********************************************************************
//   TestSwap.java
//
//   Contains a static method to explore parameter passing. 
// **********************************************************************
public class TestSwap
{

    // -------------------------------------------------------------------
    //  Constructor - doesn't do anything becuase there is no instance data.
    // -------------------------------------------------------------------
    public TestSwap()
    {
    }


    // -------------------------------------------------------------------
    //  Change the first actual parameter to the second actual parameter
    //  and vice versa.
    // -------------------------------------------------------------------

    public static void swapPeople (Person p1, Person p2)
    {
	System.out.println ("\n\n     Inside changePeople... Original parameters...");
	System.out.println ("     person1: " + p1);
	System.out.println ("     person2: " + p2);


	// Make changes
	Person p3;
	p3 = p1;
        p1 = p2;
        p2 = p3;

	// Print changes
	System.out.println ("\n     Inside changePeople... Swapped values...");
	System.out.println ("     person1: " + p1);
	System.out.println ("     person2: " + p2 + "\n");

    }

}