unconditional programmin java

I' m programming Minesweeper. I done it, but now my task is changed. I can't use If Else or Switch. Have you some advices how code this fragment without If ?

for (int i = 1; i <= M; i++) {
            for (int j = 1; j <= N; j++)
                if (bombs[i][j]) System.out.print("* ");
                else             System.out.print(". ");
            System.out.println();
        }

Thank in advance, Vika.