Uses of Class
java.util.OptionalLong

Packages that use OptionalLong

Package	Description
java.net.http	HTTP Client and WebSocket APIs
java.util	Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
java.util.stream	Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.
jdk.incubator.foreign	Classes to support low-level and efficient foreign memory/function access, directly from Java.

Uses of OptionalLong in java.net.http

Methods in java.net.http that return OptionalLong

Modifier and Type	Method	Description
OptionalLong	HttpHeaders.firstValueAsLong(String name)	Returns an OptionalLong containing the first header string value of the named header field.

Uses of OptionalLong in java.util

Methods in java.util that return OptionalLong

Modifier and Type	Method	Description
static OptionalLong	OptionalLong.empty()	Returns an empty OptionalLong instance.
static OptionalLong	OptionalLong.of(long value)	Returns an OptionalLong describing the given value.

Uses of OptionalLong in java.util.stream

Methods in java.util.stream that return OptionalLong

Modifier and Type	Method	Description
OptionalLong	LongStream.findAny()	Returns an OptionalLong describing some element of the stream, or an empty OptionalLong if the stream is empty.
OptionalLong	LongStream.findFirst()	Returns an OptionalLong describing the first element of this stream, or an empty OptionalLong if the stream is empty.
OptionalLong	LongStream.max()	Returns an OptionalLong describing the maximum element of this stream, or an empty optional if this stream is empty.
OptionalLong	LongStream.min()	Returns an OptionalLong describing the minimum element of this stream, or an empty optional if this stream is empty.
OptionalLong	LongStream.reduce(LongBinaryOperator op)	Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an OptionalLong describing the reduced value, if any.

Uses of OptionalLong in jdk.incubator.foreign

Methods in jdk.incubator.foreign that return OptionalLong

Modifier and Type	Method	Description
OptionalLong	NativeScope.byteSize()	If this native scope is bounded, returns the size, in bytes, of this native scope.
OptionalLong	SequenceLayout.elementCount()	Returns the element count of this sequence layout (if any).