A Double-entry bookkeeping library which is available from the Central Repository.

Demo Project for Spring State Machine

Provides extendable classes to create JAX-RS CRUD Web Services tied to JPA entity classes

A Jakarta EE banking system featuring EJB Persistent Timers, Container-Managed Transactions & modular EAR architecture. Uses AOP Security Interceptors, IdentityStore & HttpAuthenticationMechanism for RBAC. Implements thread-safe Singleton beans, pessimistic locking & atomic rollbacks via "@ ApplicationException" for high-concurrency data integrity.

A robust and modular J2EE backend template for handling transaction-based applications.