Using Bundled Libraries 
Bundled libraries provide resources to the class loader of the application that contains them and to the class loader of applications that have reference to the application which bundles the libraries. These libraries are part of the application EAR.
An Enterprise Application project exists.
In the Project Explorer, expand the Deployment Descriptor node of the Enterprise Application project.
In the context menu of the Bundled Libraries folder, choose Add/Remove.
Add the JAR files of the libraries you want to bundle in the application.
Choose Add JARs to locate JAR files within the Developer Studio workspace.
Choose Add External JARs to locate JAR files outside the Developer Studio workspace.