I have made my own frameworks, and I use these frameworks in my web applications. Now I have to create JAR file for my project and then copy this jar to web application lib path. Is it possible to make Maven do this for me.
(Currently I don’t use Maven, because I didn’t get it to work with GAE.)
Yes of course, this is possible, any build tool can do that (even a shell script).
So in maven, you define a module for your framework. You define another module for your webapp, configured as a web app, add a dependency between them. This dependancy is enough for maven to understand that your framework module jar must be included in the web application.
Here a quick introduction to maven : http://maven.apache.org/guides/getting-started/maven-in-five-minutes.html
And here a basic config file for web apps : http://maven.apache.org/guides/mini/guide-webapp.html