Uses of Class java.util.LongSummaryStatistics (Java Platform SE 8 )
Date: 2026-04-22

## Uses of Class
java.util.LongSummaryStatistics

- Packages that use LongSummaryStatistics
  Package | Description
  --- | ---
  java.util | Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
  java.util.stream | Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.

- - ### Uses of LongSummaryStatistics in java.util

    Methods in java.util with parameters of type LongSummaryStatistics
    Modifier and Type | Method and Description
    --- | ---
    `void` | LongSummaryStatistics.`combine(LongSummaryStatistics other)` Combines the state of another `LongSummaryStatistics` into this one.

  - ### Uses of LongSummaryStatistics in java.util.stream

    Methods in java.util.stream that return LongSummaryStatistics
    Modifier and Type | Method and Description
    --- | ---
    `LongSummaryStatistics` | LongStream.`summaryStatistics()` Returns a `LongSummaryStatistics` describing various summary data about the elements of this stream.

    Methods in java.util.stream that return types with arguments of type LongSummaryStatistics
    Modifier and Type | Method and Description
    --- | ---
    `static <T> Collector<T,?,LongSummaryStatistics>` | Collectors.`summarizingLong(ToLongFunction<? super T> mapper)` Returns a `Collector` which applies an `long`-producing mapping function to each input element, and returns summary statistics for the resulting values.

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