array object assignment ??

[Ajay Divakaran]

int[][] a = {{1,2},{3,4}};
Object o1 = a; /* how can 2-D array be assigned to a single object reference.Should it not bw Object[][] ??*/

[Collins Mbianda]

Even a is a 2-D array, it's an abject and for that reason
you can assign it to a simple object.

You can do this:
Object o1 = a; (you can assign a n-D array to an Object).
But you cannot do this:
int[]o1= a; (you cannot assign a 2-D array to a 1-D array).
[ August 19, 2007: Message edited by: Collins Mbianda ]

[Garrett Rowe]

you cannot assign a 2-D array to a 1-D array

This is legal:

public class ArrayAssignment
{
   public static void main(String[] args)
   {
      int[][] a = {{1,2},{3,4}};
      Object[] o = a;
   }
}

An int[] is an Object. An int[][] is an array of int[], therefore the assignment is legal.