/*
 * File: ReferenceCall.java
 * Author: Java, Java, Java
 * Description: This application illustrates what happens when
 *  a parameter of a reference type (CyberPet) is modified within
 *  a method. For reference types (as opposed to primitive types)
 *  any changes to the parameter take effect in the object that the
 *  parameter refers to, and so will persist after the method is done.

 *  In this case pet's name will change from "Harry" to "Mary" as
 *  a result of calling the myMethod(pet) in main(). The output
 *  received will be:
     main: pet name is Harry
     myMethod: pet name is Harry
     myMethod: pet name is Mary
     main: pet name is Mary
 */

public class ReferenceCall
{
    public static void myMethod(CyberPet p) 
    {
        System.out.println("myMethod: pet name is " + p.getName());
        p.setName("Mary");
        System.out.println("myMethod: pet name is " + p.getName());
    } // myMethod()

    public static void main(String argv[])
    {
        CyberPet pet = new CyberPet();
        pet.setName("Harry");
        System.out.println("main: pet name is " + pet.getName());
        myMethod(pet);
        System.out.println("main: pet name is " + pet.getName());
    }// main()
} // ReferenceCall