Log formatters

 

Log formatters format log messages so they can be used by various log handlers.

Handlers can be configured with a log formatter that knows how to format log records. The event, which is represented by the log record object, is passed to the appropriate formatter by the handler. The formatter returns formatted output to the handler, which writes the output to the output device.

The formatter is responsible for rendering the event for output. This formatter uses the resource bundle that is specified in the event to look up the message in the appropriate language.

Formatters are attached to handlers using the setFormatter method. With WAS, you can configure the formatter to work with trace, the SystemOut.log, and theSystemErr.log log files:

 

• Basic (Compatible): Preserves only basic trace information. With this option, you can minimize the amount of space taken by the trace output.

   

• Advanced: Preserves more specific trace information. You can see detailed trace information for troubleshooting and problem determination.

   

• Log analyzer trace format: Preserves trace information in the same format as produced by Showlog tool.

You can select a formatter for a handler using the console panels. See Diagnostic trace service settings for details.

You can find the java.util.logging documentation at http://java.sun.com/j2se/.

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Related concepts

Loggers
Log handlers
Log filters

 

Related Reference

Log levels