Interface BinaryOperator<T>

Type Parameters:: T - the type of the operands and result of the operator

All Superinterfaces:: BiFunction<T,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 BinaryOperator<T>
extends BiFunction<T,T,T>

Represents an operation upon two operands of the same type, producing a result of the same type as the operands. This is a specialization of BiFunction for the case where the operands and the result are all of the same type.

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

Since:: 1.8
See Also:: BiFunction, UnaryOperator

Methods

Modifier and Type	Method	Description
`static <T> BinaryOperator<T>`	`maxBy(Comparator<? super T> comparator)`	Returns a `BinaryOperator` which returns the greater of two elements according to the specified `Comparator`.
`static <T> BinaryOperator<T>`	`minBy(Comparator<? super T> comparator)`	Returns a `BinaryOperator` which returns the lesser of two elements according to the specified `Comparator`.

Methods declared in interface java.util.function.BiFunction

andThen, apply

Methods

minBy

static <T> BinaryOperator<T> minBy(Comparator<? super T> comparator)

Returns a BinaryOperator which returns the lesser of two elements according to the specified Comparator.

Type Parameters:: T - the type of the input arguments of the comparator
Parameters:: comparator - a Comparator for comparing the two values
Returns:: a BinaryOperator which returns the lesser of its operands, according to the supplied Comparator
Throws:: NullPointerException - if the argument is null

maxBy

static <T> BinaryOperator<T> maxBy(Comparator<? super T> comparator)

Returns a BinaryOperator which returns the greater of two elements according to the specified Comparator.

Type Parameters:: T - the type of the input arguments of the comparator
Parameters:: comparator - a Comparator for comparing the two values
Returns:: a BinaryOperator which returns the greater of its operands, according to the supplied Comparator
Throws:: NullPointerException - if the argument is null

© 1993, 2020, 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.
https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BinaryOperator.html