Formatter

A formatter is called by the LogProcessor when the log-request is processed. The formatter gets the LogRecord which contains several information like the message that should be logged or the name of the class that called the logger.
jLo supports the following Formatter:

PlainFormatter

This is the simlest formatter.

format:

[target] message

example:

[INFO] hello world

SimpleFormatter

This formatter also includes the date and time.

format:

yyyy/MM/dd HH:mm:ss - [target] message

example:

2003/07/14 17:00:23 - [INFO] hello world

DefaultFormatter

The DefaultFormatter includes the date and time, the target and classname and the message itself. If there is an exception set then the entire stacktrace will be written out as well.

format:

yyyy/MM/dd HH:mm:ss - [target] [classname] message

example:

2003/07/14 17:00:23 - [INFO] [org.foo.app] hello world

~DefinedFormatter

This formatter is explained in more details here