Working with Libraries 

Use

In the process of developing applications, it is common that you use prefabricated functionality or components. Such used functionality is often packed into library that consists of JAR files, ready to be included into your application’s classpath. Such library can provide:

●      Integral part of the project, common to many modules (applications)

●      Framework that you want to reuse and is not delivered with the application engine of your choice

In Java EE 5, there are two types of libraries:

●      Shared libraries

These provide resources to all enterprise applications deployed on the server. They are packed in EAR files like the enterprise applications.

●      Bundled libraries

These provide resources only to a single enterprise application, and are packed inside the application's EAR file.

Procedure

In earlier releases of the SAP NetWeaver Developer Studio, shared libraries were created in a separate Library project type. If you want to reuse your old library projects in the current version of the Developer Studio, you have to transform them into Enterprise Application projects.

For more information, see Migrating Old Library Projects.

Using Shared Libraries

For more information, see Using Shared Libraries.

Using Bundled Libraries

For more information, see Using Bundled Libraries.

Using Libraries with Highest Priority Class Loading

With heavy class loaders, you can load library classes with highest priority.

For more information, see Using Heavy Class Loaders.