Configuration for Java EE 5.0

Question

I want to know the JSP and Servlet (exact) version used in the Java EE 5.0 version. I have just added the web-app_2_5.xsd in the web.xml file. Want to check the JAR files.

Answer 1

Java EE 5.0 ships with Servlet 2.5 and JSP 2.1. You should not have the need to modify any JAR files in an existing Java EE environment. To the point, you need to ensure that the whole environment at its own supports it. A proper environment would be a Servlet 2.5 capable container/server, for example Tomcat 6, Oracle Glassfish 2, JBoss AS 5. They are downloadable at their own homepages.

You also need to ensure that your webapp's /WEB-INF/lib folder and the JRE/lib and JRE/lib/ext do not contain any servletcontainer-specific libraries like jsp-api.jar, servlet-api.jar, etcetera, which originated in an older versioned servletcontainer. They may collide with the libraries of the real servletcontainer and result in NoClassDefFoundError, AbstractMethodError exceptions and like that.