public boolean checkInput (char input) {
			if ((input == '1')||(input == '2')||(input == '3')||(input == '4')||(input == '5')||(input == '6')
					||(input == '7')||(input == '8')||(input == '9')) {
				return true;		
			} else {
				return false;
			}
		}