BinaryOperator

java.util.function

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

Method Summary

All Methods

Static Methods

Default Methods
Modifier and Type	Method and 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 inherited from interface java.util.function.BiFunction
andThen, apply

- 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