I have recently started using Netbeans with following stack Liferay, icefaces with jBoss. Is is necessary to clean-rebuild and redploy the app everytime the code is changed in a java file or jsp file. Is there a way to do this auto like in eclipse. Just save the file build and deploy happens.
I am not closely familiar with JBoss, but in Tomcat with certain settings you can edit JSP directly in Tomcat and see the change after page reload.
There is also a commercial tool called JRebel that allows you to make changes without redeploying. This works for JSPs, Java files and supported frameworks (e.g. for Spring it allows reload of configuration files).