[AutotelicBrown]

Yeah, those should be inside the for loop, and note that you should have in all of them something of the form:

tileMap[row][col] = WALL;

or:

tileMap[row][col] = EMPTY;

Actually, you should assign EMPTY at first, and only check for the 'true' block of the ifs to change to WALL if necessary. Logically, you are checking all positions of the matrix and, if the position corresponds to a border you assigning a WALL instead of EMPTY.