Uses of Class java.util.OptionalInt (Java SE 9 & JDK 9 )

## Uses of Class
java.util.OptionalInt

- Packages that use OptionalInt
  Package | Description
  --- | ---
  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.

- - ### Uses of OptionalInt in java.util

    Methods in java.util that return OptionalInt
    Modifier and Type | Method | Description
    --- | --- | ---
    `static OptionalInt` | OptionalInt.`empty​()` | Returns an empty `OptionalInt` instance.
    `static OptionalInt` | OptionalInt.`of​(int value)` | Returns an `OptionalInt` describing the given value.

  - ### Uses of OptionalInt in java.util.stream

    Methods in java.util.stream that return OptionalInt
    Modifier and Type | Method | Description
    --- | --- | ---
    `OptionalInt` | IntStream.`findAny​()` | Returns an `OptionalInt` describing some element of the stream, or an empty `OptionalInt` if the stream is empty.
    `OptionalInt` | IntStream.`findFirst​()` | Returns an `OptionalInt` describing the first element of this stream, or an empty `OptionalInt` if the stream is empty.
    `OptionalInt` | IntStream.`max​()` | Returns an `OptionalInt` describing the maximum element of this stream, or an empty optional if this stream is empty.
    `OptionalInt` | IntStream.`min​()` | Returns an `OptionalInt` describing the minimum element of this stream, or an empty optional if this stream is empty.
    `OptionalInt` | IntStream.`reduce​(IntBinaryOperator op)` | Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an `OptionalInt` describing the reduced value, if any.