/**
 * Instantiate an array and fill it
 */
public class InstantiateFillPrintArray
{
    public static void main(String [] args)
    {

        int x = 10;
        System.out.println("x = " + x);

        // declare the array; creating a space to hold its memory address
        int [] xArray;

        // create (instantiate) the array
        xArray = new int[4];

        // This loop fills the array with powers of 2
        for (int index = 0; index < xArray.length; index++)
        {
            xArray[index] = (int)(Math.pow(2,index));
        }

        // This doesn't work!  (Prints memory address, not contents)
        System.out.println("xArray = " + xArray);
        
        // Do this instead:
        for (int i = 0; i < xArray.length; i++)
            System.out.println("array [" + i + "] = " + xArray[i]);

    }
}