private void drawContents() {

		for (int i = 0; i < rows; i++) {
			for (int j = 0; j < columns; j++) {
				Square square = elements[i][j];
				drawTop(square);
			}
			System.out.println("+");

			for (int j = 0; j < columns; j++) {
				Square square = elements[i][j];
				drawLeft(square);
			}
			System.out.println("|");
		}
	}