Consumer (Java SE 12 & JDK 12 )

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 `Consumer` that performs, in sequence, this operation followed by the `after` operation.

- 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 the after operation
    
    Throws:
    
    NullPointerException - if after is null