How to get the tomcat internal log out?

[Kurt]

Hello all:

   I compile tomcat 5.5.30 and import it to eclipse as a project, to research how the tomcat load class , I need to view the running log ,after reading through this post(http://tomcat.apache.org/tomcat-5.5-doc/logging.html) and adding below log.properties to the direcotry 'common/classes' and log4j-1.26.jar to common/lib, logs turned out not to be generated when I debug the project starting from class Catalina. No idea about it, I've tried many times. 

log4j.rootLogger=DEBUG,R
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=k:\\logs\\tomcat.log
log4j.appender.R.MaxFileSize=10MB
log4j.appender.R.MaxBackupIndex=10
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p%t%c-%m%n
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, R
log4j.logger.org.apache.catalina.core=DEBUG, R
log4j.logger.org.apache.catalina.session=DEBUG, R

   And the program parameter I use is 'start', vm parameter is '-Dcatalina.home="I:\My Documents\program\java\projects\eclipse\mye9.0\TOMCAT_5_5_30\mybuild-5.5.30"' 
   Any ideas? Thanks 


Kurt Xu