![]() When Java is installed, it adds a global configuration file to the lib folder of the Java installation directory. It uses the Properties format to store settings as key/value pairs. stores its configuration in a file called logging.properties. Most of the configuration examples provided in this guide use configuration files. Although you can configure logging frameworks through code, using a configuration file is the preferred method as it consolidates all configuration settings in a single location. These files are bundled with your application executable and are loaded by the logging framework at runtime. In most cases, logging frameworks are configured through configuration files. Filters aren't required, but they give you greater control over the flow of your log messages. Additionally, you can use one or more Filters to specify which Appenders should be used for which events. The Appender then formats the record using a Layout before sending it to a destination such as the console, a file, or another application. When your application makes a logging call, the Logger records the event in a LogRecord and forwards it to the appropriate Appender. Layouts determine how the data looks when it appears in a log entry.
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