Method Detail

• compare

  OptionalInt compare(T left,
                      T right)

  Variation of Comparator.compare(Object, Object) that returns OptionalInt. If this OptionalComparator is obtained from ExceptionHandler.comparator(Comparator), the OptionalInt will be empty only if the underlying Comparator throws. Otherwise the returned OptionalInt just wraps the return value of underlying Comparator.

  Parameters:

  left - see Comparator.compare(Object, Object)

  right - see Comparator.compare(Object, Object)

  Returns:

  OptionalInt typically wrapping return value of Comparator.compare(Object, Object), or an empty OptionalInt (typically signifying an exception)

  See Also:

  ExceptionHandler.comparator(Comparator), Comparator.compare(Object, Object)

• orElse

  default Comparator<T> orElse(int result)

  Converts this OptionalComparator to plain Comparator using default value. The returned Comparator will unwrap present value from the OptionalInt if possible, or return result if the OptionalInt is empty.

  Parameters:

  result - default value to return instead of an empty OptionalInt

  Returns:

  plain Comparator that either unwraps OptionalInt or returns default value

  See Also:

  orElseGet(IntSupplier), OptionalInt.orElse(int)

• orElseGet

  default Comparator<T> orElseGet(IntSupplier source)

  Converts this OptionalComparator to plain Comparator using fallback IntSupplier. The returned Comparator will unwrap present value from the OptionalInt if possible, or fall back to calling source if the OptionalInt is empty.

  Parameters:

  source - IntSupplier to query for fallback value when OptionalInt is empty

  Returns:

  plain Comparator that either unwraps OptionalInt or falls back to source

  See Also:

  orElse(int), OptionalInt.orElseGet(IntSupplier)