Uses of Interface
java.util.function.UnaryOperator

Packages that use UnaryOperator 
Package Description
java.time.temporal
Access to date and time using fields and units, and date time adjusters.
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.concurrent.atomic
A small toolkit of classes that support lock-free thread-safe programming on single variables.
java.util.function
Functional interfaces provide target types for lambda expressions and method references.
java.util.stream
Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.