Ulf Dittmer wrote:
and they developpe very fast with nice design the only thing to do is to look for a template and some jquery plugins using only dreamweaver and the work is done.
This suggests that they are putting Java code into JSP pages, which is really bad design that the industry moved away from 10 years ago. They should separate out Java code into proper classes, at which point their development cycle becomes very much like yours.
my question is why tomcat make memoryleak when a class or jar file is changed or reloaded and how to prevent that ?
Tomcat has gotten better at that with recent releases, but the issue is likely not going away any time soon. But reloading a web app should not take more than a few seconds, restarting Tomcat running that web app maybe 30 seconds once you run into the PermGen issue. How often does that actually happen?