• 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

    • Method Detail

      • 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