I followed the howto which I found on the wiki "http://wiki.jboss.org/wiki/Wiki.jsp?page=UseJBossEclipseIDEToDoJBossSeamsBookingExample" for debugging the Booking example application inside eclipse. The author of the page describes how you can debug the example by just importing the Java -sources in a project in workspace. The whole application (the sources which are imported in eclipse and the rest of the application) resides in a war file in the JBoss deploy directory. So if I change a java class in eclipse, I have to ensure that ant takes the changed source file out of the eclipse-workspace while compiling the classes and building+deploying the .ear - file. I would like to manage the whole application in eclipse. The tutorial on "http://docs.jboss.com/jbosside/tutorial/build/en/html/index.html" describes how to build and manage a J2EE 1.4 - application with JBossIde. I tried both JBossIde1.5 and WTP1.0.2RC1. Does anyone build EJB3.0/Seam - applications with the help of eclipse managing the whole application in the IDE? Help would greatly be appreciated.