Domain Object Explorer is a desktop application that auto-generates the user interface for your JPA / EJB3 entity beans.
SWELL defines an English-like domain-specific language (DSL) for testing Web and Swing applications. It also provides interpreters that can run scripts in the language as an external DSL. SWELL uses VisualLangLab (http://vll.java.net/ as its parser-generator. User documentation is available in the Docs (http://java.net/projects/swell/sources/svn/show/SWELL/trunk/docs) directory.