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Added in API level 24

Summary: Methods

LongConsumer

public interface LongConsumer

java.util.function.LongConsumer

Known indirect subclasses

LongStream.Builder, LongSummaryStatistics

LongStream.Builder	A mutable builder for a `LongStream`.
LongSummaryStatistics	A state object for collecting statistics such as count, min, max, sum, and average.

Represents an operation that accepts a single long-valued argument and returns no result. This is the primitive type specialization of Consumer for long. Unlike most other functional interfaces, LongConsumer is expected to operate via side-effects.

This is a functional interface whose functional method is accept(long).

See also:

Consumer

Summary

Public methods
`abstract void`	`accept(long value)` Performs this operation on the given argument.
`default LongConsumer`	`andThen(LongConsumer after)` Returns a composed `LongConsumer` that performs, in sequence, this operation followed by the `after` operation.

Public methods

accept

Added in API level 24

public abstract void accept (long value)

Performs this operation on the given argument.

Parameters
`value`	`long`: the input argument

andThen

Added in API level 24

public LongConsumer andThen (LongConsumer after)

Returns a composed LongConsumer 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`	`LongConsumer`: the operation to perform after this operation

Returns
`LongConsumer`	a composed `LongConsumer` that performs in sequence this operation followed by the `after` operation

Throws
`NullPointerException`	if `after` is null

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Last updated 2026-08-03 UTC.

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