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我推荐您下载代码，开始做各种尝试，甚至自己动手向其中添加新内容。
I recommend you get the code, start playing with it, and maybe try your hand at adding new things to it.
log4j很容易设置：您所需做的就是向应用程序的每个部分提供log4j JAR文件，从而开始日志记录(请参阅下载和安装log4j)。
Log4j is easy to set up: all you need to do is supply the log4j JAR files to each piece of your application and get on with logging (see Downloading and installing log4j).
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