java.util.concurrent

包名称	说明	备注
java.util.concurrent	Utility classes commonly useful in concurrent programming. This package includes a few small standardized extensible frameworks, as well as some classes that provide useful functionality and are otherwise tedious or difficult to implement	提供并发编程中常用且实用的类。该包下也包括一些标准化的可扩展框架以及一些有用但繁琐或难以实现的类