| Return type | Name and parameters | 
|---|---|
| OptionalLong | filter(LongPredicate test)If a value is present in the OptionalLong, tests the value using
the given predicate and returns the optional if the test returns true or
else empty. | 
| long | get()If a value is present in the OptionalLong, returns the value,
otherwise throwsNoSuchElementException. | 
| Optional | mapToObj(LongFunction mapper)If a value is present in the OptionalLong, returns anOptionalconsisting of the result of applying the given function to the value or else empty. | 
| LongStream | stream()If a value is present in the OptionalLong, returns a LongStream 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, getAt, getMetaClass, getMetaPropertyValues, getProperties, grep, grep, hasProperty, identity, inject, inject, inspect, invokeMethod, is, isCase, 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 OptionalLong, tests the value using
the given predicate and returns the optional if the test returns true or
else empty.
assert !OptionalLong.empty().filter(n -> true).isPresent() assert OptionalLong.of(123L).filter(n -> true).isPresent() assert !OptionalLong.of(123L).filter(n -> false).isPresent() assert OptionalLong.of(123L).filter(n -> true).getAsLong() == 123L
If a value is present in the OptionalLong, returns the value,
otherwise throws NoSuchElementException.
assert OptionalLong.of(1234L).get() == 1234L
If a value is present in the OptionalLong, returns an Optional
consisting of the result of applying the given function to the value or else empty.
assert !OptionalLong.empty().mapToObj(x -> new Object()).isPresent() assert OptionalLong.of(123L).mapToObj(x -> new Object()).isPresent() assert !OptionalLong.of(123L).mapToObj(x -> null).isPresent() assert OptionalLong.of(1234L).mapToObj(Long::toString).get() == '1234'
If a value is present in the OptionalLong, returns a LongStream with the value as its source or else an empty stream.