/**
 * This class is used to illustrate the usage of static variables and methods
 * as well as the "this" keyword.
 * 
 * @author alchambers
 * @version sp17
 */
public class SimpleClassController{

    public static void main(String[] args){
        final int NUM = 5;

        // Creat an array of objects of type SimpleClass
        System.out.println("Creating an array of " + NUM + " objects of type SimpleClass");
        SimpleClass[] objects = new SimpleClass[NUM];
        for(int i = 0; i < objects.length; i++){
            objects[i] = new SimpleClass();
        }
        System.out.println();

        // Each object has its own copy of the instance variables
        System.out.println("Each object has its own copy of the instance variable");
        for(int i = 0; i < objects.length; i++){
            System.out.println("Object " + i + ": " + objects[i].getInstanceVariable());
        }
        System.out.println();

        // Changing the instance variable of one object does not affect the value of
        // the instance variables of the other objects
        System.out.println("Changing the value of one of the object's instance variable:");
        objects[0].setInstanceVariable(-14);
        for(int i = 0; i < objects.length; i++){
            System.out.println("Object " + i + ": " + objects[i].getInstanceVariable());
        }
        System.out.println();

        // However, a static variable belongs to a class not to any particular object of that class type
        // Thus, there is only one copy of such a static variable that all objects can reference.        
        System.out.println("However, the static variable is shared amongst all objects");
        for(int i = 0; i < objects.length; i++){
            System.out.println("Object " + i + ": " + objects[i].getStaticVariable());   
        }
        System.out.println();
        
        // Changing the value of the static variable is reflected in all objects of class type
        System.out.println("Changing the value of the static variable: ");
        objects[0].setStaticVariable(-44444);
        for(int i = 0; i < objects.length; i++){
            System.out.println("Object " + i + ": " + objects[i].getStaticVariable());   
        }        
    }
}