| 软件包 | 描述 |
|---|---|
| java.util |
包含集合框架、遗留的集合类、事件模型、日期和时间的设施、国际化和各种实用工具类(一个字符串标记,一个随机数发生器,和一位阵列)。
|
| java.util.stream |
类,以支持元素流上的功能样式操作,如Map减少集合上的转换。
|
| Modifier and Type | Method and Description |
|---|---|
void |
LongSummaryStatistics.combine(LongSummaryStatistics other)
结合另一个
LongSummaryStatistics状态进入这一。
|
| Modifier and Type | Method and Description |
|---|---|
LongSummaryStatistics |
LongStream.summaryStatistics()
返回一个
LongSummaryStatistics描述该流的元素的各种汇总数据。
|
| Modifier and Type | Method and Description |
|---|---|
static <T> Collector<T,?,LongSummaryStatistics> |
Collectors.summarizingLong(ToLongFunction<? super T> mapper)
返回一个
Collector采用
long-producing映射功能,每个输入元素,并返回结果值汇总统计。
|
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