code: public static int ceilDivide(int dividend, int divisor) {
          if (divisor == 0) {
              throw new ArithmeticException("Cannot divide by zero: " + dividend + "/" + divisor);
          }
          int correction;
          if (dividend % divisor == 0) {
              correction = 0;
          } else if (Integer.signum(dividend) * Integer.signum(divisor) < 0) {
              correction = 0;
          } else {
              correction = 1;
          }
          return (dividend / divisor) + correction;
      }
docs: Divides and ceils the result without using floating point arithmetic. For floor division,
  see {@link Math#floorDiv(long, long)}.
  
  @throws ArithmeticException if {@code divisor == 0}
  @param dividend the dividend
  @param divisor the divisor
  @return dividend / divisor, ceiled