You can add logging to a file by attaching a Handler to the LogManager, as shown in Listing 5.

可以通过为 LogManager 附加一个 Handler 将日志记录添加到文件，如清单 5 所示。

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The problem with this approach is that the LogManager instance uses the system class loader to instantiate classes from the configuration file.

这种方法的问题是 LogManager 实例使用了系统类的装载程序从配置文件中对类进行实例化。

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