i have been working on an java based application generator in windows. now need to shift to Linux. i downloaded the linux version of tomcat + compatible java stuff + ant. the application that i am having success in windows is giving me a nullpointerexception in linux + the debug and SOP statements are not showing up in "./catalina.sh run"....this stops me from finding the error..as the exception is pointing to a SOP. Thanks in advance to anybody sharing their ideas on this problem. Cheers Umesh

In linux the tomcat will run as a separate thread. It wont run as a console application. But what ever the SOP statements you gave in application will be redirected to the log files. In windows they will be spit to console but for linux theywill be sent to the log file. Just check the files in the logs folder of the tomcat installation directory.