A J2EE library is a standalone EJB or Web Application module, multiple EJB or Web Application modules packaged in an Enterprise Application (EAR), or a single plain JAR file that is registered with the J2EE application container upon deployment. After the library has been installed and started, other deployed modules can reference the library.
The following procedure describes how to update the configuration of an already-installed J2EE library.
Library
entry in the Type
column.
The name of the J2EE library is always followed by a version of
the form
(Specification@Implementation)
, where
Specification
identifies the version number
of the specification (for example, the J2EE specification version)
to which a library or package conforms and
Implementation
Identifies the version number
of the actual code implementation for the library or package. This
versioning of J2EE libraries enables referencing applications to
specify a required minimum version of the library to use, or an
exact, required version.