BinaryOperator

public interface BinaryOperator
implements BiFunction<T, T, T>

java.util.function.BinaryOperator<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(java.lang.Object, java.lang.Object).

See also:

BiFunction
UnaryOperator

Summary

Public methods
`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`.

Inherited methods

From interface


        
          java.util.function.BiFunction

`default <V> BiFunction<T, T, V>`	`andThen(Function<? super R, ? extends V> after)` Returns a composed function that first applies this function to its input, and then applies the `after` function to the result.
`abstract T`	`apply(T t, T u)` Applies this function to the given arguments.

Public methods

maxBy

Added in API level 24

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

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

Parameters
`comparator`	`Comparator`: a `Comparator` for comparing the two values

Returns
`BinaryOperator<T>`	a `BinaryOperator` which returns the greater of its operands, according to the supplied `Comparator`

Throws
`NullPointerException`	if the argument is null

minBy

Added in API level 24

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

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

Parameters
`comparator`	`Comparator`: a `Comparator` for comparing the two values

Returns
`BinaryOperator<T>`	a `BinaryOperator` which returns the lesser of its operands, according to the supplied `Comparator`

Throws
`NullPointerException`	if the argument is null