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
Modifier and Type | Method | Description |
---|---|---|
static <T> BinaryOperator<T> | maxBy(Comparator<? super T> comparator) | Returns a |
static <T> BinaryOperator<T> | minBy(Comparator<? super T> comparator) | Returns a |
Methods declared in 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
- aComparator
for comparing the two values - Returns:
- a
BinaryOperator
which returns the lesser of its operands, according to the suppliedComparator
- 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
- aComparator
for comparing the two values - Returns:
- a
BinaryOperator
which returns the greater of its operands, according to the suppliedComparator
- Throws:
-
NullPointerException
- if the argument is null