Interface Consumer<T>
- Type Parameters:
-
T
- the type of the input to the operation
- All Known Subinterfaces:
Stream.Builder<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 Consumer<T>
Represents an operation that accepts a single input argument and returns no result. Unlike most other functional interfaces, Consumer
is expected to operate via side-effects.
This is a functional interface whose functional method is accept(Object)
.
- Since:
- 1.8
Method Summary
Modifier and Type | Method | Description |
---|---|---|
void | accept(T t) | Performs this operation on the given argument. |
default Consumer<T> | andThen(Consumer<? super T> after) | Returns a composed |
Method Detail
accept
void accept(T t)
Performs this operation on the given argument.
- Parameters:
-
t
- the input argument
andThen
default Consumer<T> andThen(Consumer<? super T> after)
Returns a composed Consumer
that performs, in sequence, this operation followed by the after
operation. If performing either operation throws an exception, it is relayed to the caller of the composed operation. If performing this operation throws an exception, the after
operation will not be performed.
- Parameters:
-
after
- the operation to perform after this operation - Returns:
- a composed
Consumer
that performs in sequence this operation followed by theafter
operation - Throws:
-
NullPointerException
- ifafter
is null