MagicSquare Number

[Taimoor Rana]

hello guys, i have this code written down to print a magic square and i get an error.

public void doMagic()
{
int k = 1;
int row = 0;
int col = order/2;
msArray[row][col] = k;

for ( int r = 0; r < msArray.length; r++)
{
for ( int c = 0; c < msArray[r].length; c++)
{
k = k + 1;
if (k > (order*order))
{
return;
}
row = row - 1;
col = col + 1;

if (row == -1 && col == order)
{
row = 1;
col = order - 1;
}
else if (row == -1)
{
r = order - 1;
}
else if (c == order)
{
c = 0;
}
if (msArray[row][col] != 0) <--but i get this msg here : Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1
{
col = col - 1;
row = row + 2;
}
else
{
msArray[row][col] = k;
}
}
}
}
any help would be great. thx.
i've attached a file for more info on Magic Square.

[litchi]

Well, it looks to me like the error is here:

col = col - 1;

if col is 0 then col-1 = -1 and the array doesn't have a column at -1, hence the outOfBounds error.