| 软件包 | 描述 |
|---|---|
| java.util |
包含集合框架，旧集合类，事件模型，日期和时间设施，国际化和其他实用程序类（字符串tokenizer，随机数生成器和位数组）。
|
| java.util.regex |
匹配字符序列与正则表达式指定的模式的类。
|
| Class and Description |
|---|
| MatchResult
匹配操作的结果。
|
| Pattern
正则表达式的编译表示。
|
| Class and Description |
|---|
| Matcher
执行上匹配操作的引擎character sequence通过解释 Pattern 。
|
| MatchResult
匹配操作的结果。
|
| Pattern
A compiled representation of a regular expression.
|
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