Array

[Netty poestel]

Here's something I'm stumbling with

 
 1. public class CommandArgsThree {
 2.     public static void main(String [] args) {
 3.        String [][] argCopy = new String[2][2];
 4.        int x;
 5.        argCopy[0] = args;
 6.        x = argCopy[0].length;
 7.        for (int y = 0; y < x; y++) {
 8.            System.out.print(" " + argCopy[0][y]);
 9.        }
 10.   }
 11.}
 

and the command-line invocation,
java CommandArgsThree 1 2 3
Q-->what is the result?

I'm not being able to interpret this code.
from intial feedbacks this is how I'm seeing the picture

____________
| 0 | 1 |   <________
|____|_____|       |
                   |
____________       |
| 0 | 1    |       |
|___|_____ |       |
|                  |
|                  |
|                  |
|                  |
|                  |
|                  |
|__________________|
| 0  | 1   |
|____|_____|
"argcopy"
 

each element in "argcopy" contains an array of 2 elements as shown
above 'argcopy' [ could not draw the linking lines properly....too painful ]
considering 'x = argCopy[0].length;' should be 3 , what is happening with

System.out.print(" " + argCopy[0][y]); // in terms of the boxes I have
drawn. If at all I have drawn them in the proper way.

TIA

(

tags added and an attempt to format the code)
[ November 10, 2004: Message edited by: Barry Gaunt ]

[Atul Chandran]

5. argCopy[0] = args;

after this line argCopy[0] will be refering to the array of length 3 which is reffered to by arg.

before line 5
argcopy[0]-------->[null] [null] /*an array of length 2 whose elements are initialized to null.*/


after line 5.
argcopy[0]-------->["1"] ["2"] ["3"]//an array of length 3 .

[ November 10, 2004: Message edited by: Atul Chandran ]

[ November 10, 2004: Message edited by: Atul Chandran ]
[ November 10, 2004: Message edited by: Atul Chandran ]

[Netty poestel]

Originally posted by Atul Chandran:
5. argCopy[0] = args;

after this line argCopy[0] will be refering to a new array of length 3.

before line 5
argcopy[0]-------->[0] [0] //an array of length 2 initialized to 0.


after line 5.
argcopy[0]-------->[1] [2] [3]//an array of length 3.

[ November 10, 2004: Message edited by: Atul Chandran ]

[ November 10, 2004: Message edited by: Atul Chandran ]

Howdy..

(i)
"before line 5 argcopy[0]-------->[0] [0] an array of length 2 initialized to 0."

since it's a String array, shouldn't that be initialized as a null ?


(ii)
"after this line argCopy[0] will be refering to a new array of length 3."

would this mean that argcopy is now referring 'also' to a 3rd new array. ? so are the original 2 are stll connected at this point ?

Thx.

[Atul Chandran]

Sorry my mistake ...you are right..I have editided my post...Didn't look at the code closely.