During development, you will often need to make changes to Web clients. To update a servlet you modify the source file, recompile the servlet class, update the component in the WAR, and redeploy the application. Except for the compilation step, you update a JSP page in the same way.
To try this feature, first build, package, and deploy the JSP version of the Hello application:
Go to j2eetutorial/examples/src and build the example by running ant hello2.
Create a J2EE application called Hello2App.
Create the WAR and add ...