zll00561的专栏

OSGi是什么 OSGi亦称做Java语言的动态模块系统，它为模块化应用的开发定义了一个基础架构。OSGi容器已有多家开源实现，比如Knoflerfish、Equinox和Apache的Felix。您可以通过这些容器，把您的应用程序劈分为多个模块单元，这样，您就可以更容易地管理这些模块单元之间的交叉依赖关系。 OSGi规范和Servlet规范及EJB规范类似，该规范定义了两种对象，一是

A small frog wants to get to the other side of a river. The frog is currently located at position 0, and wants to get to position X. Leaves fall from a tree onto the surface of the river. You are give

You are given N counters, initially set to 0, and you have two possible operations on them: increase(X) − counter X is increased by 1, max counter − all counters are set to the maximum value of any c