Example PiggyBank

PiggyBank - A Very Simple Example

An updated version with a complete introduction article PiggyBank is available at JAX Magazine.

PiggyBank is a very easy understandable example, but you can find all instances needed to make true J2EE-Enterprise applications. So we have constructed the presentation, business and data layer and via web client or swing client an access to the application is possible. You can use the example without other utilities. Download the archive with the extended libraries (ext-libs), unpack and start it. The readme.txt file gives you a helper by the hand.

The layer model of the PiggyBank example:

	=			=		=
Presentation		Specifi- cation	Implementation		Connec- tion		Persistance
Enhydra			JOnAs		JDBC2		hsqlDB
Swing			JBoss				mySQL
...			...				...

The UML model showes the business logic used by the PiggyBank business tier:

Specification Interface:
Business Class:
Home Interface:
Object Interface:
PK Class:
Exception Class:
Use case diagramm: