Message loggers provide information useful to end-users and administrators. Therefore, support is provided to translate the message texts into different languages. Trace loggers provide debug information for program development and problem determination in the field. Trace data is not translated. Handlers Handlers process the event data generated by the loggers.
Handlers correspond to a physical device, such as a console, file or socket.
They usually, but not always, format the data. At least one handler must be attached to a logger or the event data is lost. JLog supplies a set of handlers which write to System.out, System.err, a file, a rotating set of file, a TCP socket and a Java AWT TextArea. Filters Filters control which log records are written to the output devices controlled by the Handlers. Formatters Formatters present event data in a desired format.