| Package | Description |
|---|---|
| java.util |
Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
|
| java.util.stream |
Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.
|
| Modifier and Type | Method and Description |
|---|---|
static OptionalDouble |
OptionalDouble.empty()
Returns an empty
OptionalDouble instance.
|
static OptionalDouble |
OptionalDouble.of(double value)
Return an
OptionalDouble with the specified value present.
|
| Modifier and Type | Method and Description |
|---|---|
OptionalDouble |
IntStream.average()
Returns an
OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty.
|
OptionalDouble |
DoubleStream.average()
Returns an
OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty.
|
OptionalDouble |
LongStream.average()
Returns an
OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty.
|
OptionalDouble |
DoubleStream.findAny()
Returns an
OptionalDouble describing some element of the stream, or an empty
OptionalDouble if the stream is empty.
|
OptionalDouble |
DoubleStream.findFirst()
Returns an
OptionalDouble describing the first element of this stream, or an empty
OptionalDouble if the stream is empty.
|
OptionalDouble |
DoubleStream.max()
Returns an
OptionalDouble describing the maximum element of this stream, or an empty OptionalDouble if this stream is empty.
|
OptionalDouble |
DoubleStream.min()
Returns an
OptionalDouble describing the minimum element of this stream, or an empty OptionalDouble if this stream is empty.
|
OptionalDouble |
DoubleStream.reduce(DoubleBinaryOperator
Performs a
reduction on the elements of this stream, using an
associative accumulation function, and returns an
OptionalDouble describing the reduced value, if any.
|