Jakarta Commons Logging (JCL)提供的是一个日志(Log)接口(interface)，同时兼顾轻量级和不依赖于具体的日志实现工具。它提供给中间件/日志工具开发者一个简单的日志操作抽象，允许程序开发人员使用不同的具体日志实现工具。用户被假定已熟悉某种日志实现工具的更高级别的细节。JCL提供的接口，对其它一些日志工具，包括Log4J, Avalon LogKit, and JDK 1.4等，进行了简单的包装，此接口更接近于Log4J和LogKit的实现。
LogKit LogKit is a very small android library, made to make logging easier, faster and stilish to be incorporated in your code. Repository LogKit uses jitpack as package repository. To use it you need to add that line to your project build.gradle fi
