different log4J log files for same application

[waltz co <wa...@yahoo.com>]

hi, 
  i have an application that listens to a specific port to do its task. 
this app runs on multiple instances by specifying different ports in 
the argument. 
   
  MyApp-1211.bat contains 
    java com.sample.MyApp 1211 
  
 
  MyApp-1311.bat contains 
   java com.sample.MyApp 1311 
  
 
  MyApp-1411.bat contains 
   java com.sample.MyApp 1411 

     this application logs to a file. the problem is all 3 instances 
log into a single file, myApp.log. is there a way to tell log4j to use 
different log files, like: 

myApp-port1211.log 
myApp-port1311.log 
myApp-port1411.log 
   
  can you tell me how do i configure my log4j.properties file to achive this? here's 
my current configuration file:
   
log4j.rootCategory=DEBUG, R
log4j.logger.com=DEBUG, R
log4j.logger.com.sample.MyApp=INFO,stdout

# stdout is console output
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%m%n

# R is set to a log file that rolls over to a new file after the MaxFileSize size.
# One backup log file is kept
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=../../logs/myApp.log
log4j.appender.R.MaxFileSize=5000KB
#Keep one backup file
log4j.appender.R.MaxBackupIndex=3
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d~%p~%c~ %m%n
   
thanks.

        


		
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