How do I make log4j create log files on demand only?

Question

We have a modular application where modules have their own log4j logs (i.e. communication log and error log). The appenders and categories for these are all configured in th

Answer 1

In Log4j 2, both FileAppender and RollingFileAppender has the parameter "createOnDemand" which can be used to configure to create the log file only when a log event passed to the appender.

Example:

More details here: https://logging.apache.org/log4j/2.x/manual/appenders.html#RollingRandomAccessFileAppender