How to rotate log files based on time rather than size in Log4j?

Question

I use Log4j with the RollingFileAppender to create a log rotation based on size.

How can I configure it to log to each file for a certain amount of

Answer 1

Additionally,

log4j.appender.myAppender=org.apache.log4j.DailyRollingFileAppender
**log4j.appender.myAppender.DatePattern='.'yyyy-MM-dd-HH**

The following list shows all the date patterns which have defined by log4j,

Minutely  '.'yyyy-MM-dd-HH-mm application.log.2013-02-28-13-54
Hourly '.'yyyy-MM-dd-HH application.log.2013-02-28-13
Half-daily '.'yyyy-MM-dd-a application.log.2013-02-28-AM app.log.2013-02-28-PM
Daily '.'yyyy-MM-dd application.log.2013-02-28
Weekly '.'yyyy-ww application.log.2013-07 app.log.2013-08 
Monthly '.'yyyy-MM application.log.2013-01 app.log.2013-02