package ArrayThangy;
import java.io.*;

public class Main
{
    public Main (){}
    public static class ArrayThangy
    {
        public int[] theGoodies = {1, 2, 3};
        public ArrayThangy (){}
    }

    public static void main (String args [])
    {
        ArrayThangy numeroUno = new ArrayThangy ();
        ArrayThangy numeroDos = new ArrayThangy ();
        ArrayThangy numeroTres = new ArrayThangy ();
        
        System.out.println ("Assign array one to array two");
        // The following will result in a shallow copy, a reference
        numeroDos = numeroUno;
        
        System.out.println ("Note that the arrays are identical");
        System.out.print ("Array one: ");
        for (int i = 0; i < numeroUno.theGoodies.length; i++)
        {
            System.out.print (numeroUno.theGoodies [i]);
            System.out.print (" ");
        }
        System.out.print ("\nArray two: ");
                for (int i = 0; i < numeroDos.theGoodies.length; i++)
        {
            System.out.print (numeroDos.theGoodies [i]);
            System.out.print (" ");
        }
        
        System.out.println ("\n\nChange the value of an element in array two");
        numeroDos.theGoodies [0] = 5;
        System.out.println ("Note that the arrays are still identical");
        System.out.print ("Array one: ");
        for (int i = 0; i < numeroUno.theGoodies.length; i++)
        {
            System.out.print (numeroUno.theGoodies [i]);
            System.out.print (" ");
        }
        System.out.print ("\nArray two: ");
                for (int i = 0; i < numeroDos.theGoodies.length; i++)
        {
            System.out.print (numeroDos.theGoodies [i]);
            System.out.print (" ");
        }
        
        System.out.println ("\n\nMake a deep copy of one to three");
        // The following will result in a deep copy
        for (int i = 0; i < numeroUno.theGoodies.length; i++)
            numeroTres.theGoodies [i] = numeroUno.theGoodies [i];
        

        System.out.println ("Note that arrays one and three are also identical");
        System.out.print ("Array one: ");
        for (int i = 0; i < numeroUno.theGoodies.length; i++)
        {
            System.out.print (numeroUno.theGoodies [i]);
            System.out.print (" ");
        }
        System.out.print ("\nArray three: ");
                for (int i = 0; i < numeroTres.theGoodies.length; i++)
        {
            System.out.print (numeroTres.theGoodies [i]);
            System.out.print (" ");
        }
        System.out.println ("\nChange the value of an element in array three");
        numeroTres.theGoodies [0] = 1;
        System.out.println ("Note that the arrays are NOT identical");
        System.out.print ("Array one: ");
        for (int i = 0; i < numeroUno.theGoodies.length; i++)
        {
            System.out.print (numeroUno.theGoodies [i]);
            System.out.print (" ");
        }
        System.out.print ("\nArray three: ");
                for (int i = 0; i < numeroTres.theGoodies.length; i++)
        {
            System.out.print (numeroTres.theGoodies [i]);
            System.out.print (" ");
        }
    }
  
}