| 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）。
|
| Modifier and Type | Interface and Description |
|---|---|
static interface |
PrimitiveIterator.OfDouble
一个专门
double值迭代器。
|
static interface |
PrimitiveIterator.OfInt
一个专门
int值迭代器。
|
static interface |
PrimitiveIterator.OfLong
一个专门
long值迭代器。
|
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