Reading CATALINA_HOME from java program

Hi ,
IN one of my application i have to create a file from the java program under my webapp.
How do i do that , if i give the whole path i am able to do that , but this application has to run on both windows and unix machines.
And i am really not looking to edit the source files.
Is there any way i can give like
CATALINA_HOME/webapps/MyWebapp/<filename>
Thanks

you could try with $catalina.home/webapps/MyWebapp/<filename> could work depending on how your application loads/saves the file.

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Reading CATALINA_HOME from java program

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