W3cubDocs

/OpenJDK 8

Interface UnaryOperator<T>

Type Parameters:
T - the type of the operand and result of the operator
All Superinterfaces:
Function<T,T>
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface
public interface UnaryOperator<T>
extends Function<T,T>

Represents an operation on a single operand that produces a result of the same type as its operand. This is a specialization of Function for the case where the operand and result are of the same type.

This is a functional interface whose functional method is Function.apply(Object).

Since:
1.8
See Also:
Function

Methods

identity

static <T> UnaryOperator<T> identity()

Returns a unary operator that always returns its input argument.

Specified by:
identity in interface Function<T,T>
Type Parameters:
T - the type of the input and output of the operator
Returns:
a unary operator that always returns its input argument

© 1993–2017, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.