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Consumer (Java SE 26 & JDK 26)

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Hide sidebar Show sidebar Type Parameters: T - the type of the input to the operation All Known Subinterfaces: ClassBuilder, ClassFileBuilder<E,B>, CodeBuilder, CodeBuilder.BlockCodeBuilder, FieldBuilder, MethodBuilder, 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

All MethodsInstance MethodsAbstract MethodsDefault Methods

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 Details
- 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

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Interface Consumer<T>

Method Summary

Method Details

accept

andThen