HTTP Status 404 - There is no Action mapped for namespace / and action name

When u run the project from apache tomcat server alone if that shows
"HTTP Status 404 - There is no Action mapped for namespace / and action name  xxxx"
error means, You just ensure if classes folder in WEB-INF is exist.If not means copy the bin folder and paste in WEB-INF rename as classes.

Then restart the server now check it will work....

Because :
    We are generally not create classes folder under the WEB-INF folder when the project configure in eclipse. Mostly eclipse  take the bin as a default class path, But Tomcat only know class path as (WEB-INF --> classes) so that shows error....

JQUERY METHODS

java.lang.IncompatibleClassChangeError: org/hibernate/cfg/ExtendedMappings

If we We had this new error from Hiberante – “java.lang.IncompatibleClassChangeError : class org.hibernate.cfg.ExtendedMappings has interface org.hibernate.cfg.Mappings as super class” – This is due to using the older hibernate entity manager/annotations libraries that were around when we upgraded to the newer 3.5.x version of hibernate. Hibernate includes the entity manager and annotations as part of the hibernate core library.

We Will Download that using following links

LINK1  

LINK 2 

Oracle`s New Eclipse plug-in.

Oracle release set of new plug-ins for Eclipse (3.5.2 and 3.6) its very useful for Developers to code in Java Enterprise Edition 6.

The latest release of Oracle Enterprise Pack for Eclipse 11g continues to provide Java developers with new tooling that can enhance their productivity.

It Given the extensive support Eclipse offers for Oracle's various back-end services such as Glassfish, Weblogic Web Services Annotations and Coherence, it's surprising that the plug-ins don't install an Oracle banner within Eclipse.

While the plug-ins are little more than conduits to peddle Oracle's expensive back-end software, for those poor developers who slave over code and debugging takes, it can save hours, if not days


If u want that plug-in means Click here.,



Key Features:

Support for Eclipse 3.6 -- allows users to develop on the latest Eclipse platform and leverage new Java EE 6 tools including JSF 2.0 tools, which simplify project configuration and support XHTML editing, facelets, and composite component development; support for other new Java EE 6 standards like Servlet 3.0, EJB 3.1, and JPA 2.0 

Elegant Java

This Site Is Very useful for Java related Thoughts....