# JSF Libraries

A JSF Library is very similar in concept to the Eclipse JDT User Library. They are meant to be named collections of jars that can be added as references to a Dynamic Web Project. A JSF Library differs from a JDT User Library in the following ways:

- A JSF Library can be marked for deployment to the WEB-INF/lib directory
- A JSF Library can be created procedurally by an extender
- A JSF Library can be marked as an implementation
- A JSF Library reference is currently not implemented as a classpath container variable reference
- The JSF Library Registry, that is persisted for a workspace, is currently not importable or exportable

JSF Facets

JSF Libraries

Create and Update JSF Libraries
Adding and Removing JSF Library References from a Project