| Return type | Name and parameters |
|---|---|
OptionalInt
|
filter(IntPredicate test)
If a value is present in the OptionalInt, tests the value using
the given predicate and returns the optional if the test returns true or
else empty.
|
int
|
get()
If a value is present in the OptionalInt, returns the value,
otherwise throws NoSuchElementException.
|
Optional
|
mapToObj(IntFunction mapper)
If a value is present in the OptionalInt, returns an Optional
consisting of the result of applying the given function to the value or else empty.
|
IntStream
|
stream()
If a value is present in the OptionalInt, returns an IntStream with the value as its source or else an empty stream. |
addShutdownHook, any, any, asBoolean, asType, collect, collect, collect, dump, each, eachMatch, eachMatch, eachWithIndex, every, every, find, find, findAll, findAll, findIndexOf, findIndexOf, findIndexValues, findIndexValues, findLastIndexOf, findLastIndexOf, findResult, findResult, findResult, findResult, getAt, getMetaClass, getMetaPropertyValues, getProperties, grep, grep, hasProperty, identity, inject, inject, inspect, invokeMethod, is, isCase, isNotCase, iterator, metaClass, print, print, printf, printf, println, println, println, putAt, respondsTo, respondsTo, setMetaClass, split, sprintf, sprintf, stream, tap, toString, use, use, use, with, with, withCloseable, withStream, withTraits
If a value is present in the OptionalInt, tests the value using
the given predicate and returns the optional if the test returns true or
else empty.
assert !OptionalInt.empty().filter(i -> true).isPresent() assert OptionalInt.of(1234).filter(i -> true).isPresent() assert !OptionalInt.of(1234).filter(i -> false).isPresent() assert OptionalInt.of(1234).filter(i -> true).getAsInt() == 1234
If a value is present in the OptionalInt, returns the value,
otherwise throws NoSuchElementException.
assert OptionalInt.of(1234).get() == 1234
If a value is present in the OptionalInt, returns an Optional
consisting of the result of applying the given function to the value or else empty.
assert !OptionalInt.empty().mapToObj(x -> new Object()).isPresent() assert OptionalInt.of(1234).mapToObj(x -> new Object()).isPresent() assert !OptionalInt.of(1234).mapToObj(x -> null).isPresent() assert OptionalInt.of(1234).mapToObj(Integer::toString).get() == '1234'
If a value is present in the OptionalInt, returns an IntStream with the value as its source or else an empty stream.