jBPM
jBPM (Java Business Process Management) is an open-source workflow and business process management framework written in Java. It enables developers to model, execute, and monitor business processes and workflows using BPMN 2.0 (Business Process Model and Notation) standards, providing tools for process automation, decision management, and case management.
Developers should learn jBPM when building enterprise applications that require complex workflow automation, such as insurance claim processing, loan approvals, or order fulfillment systems. It is particularly useful in Java-based environments where integration with existing systems (like Spring or Java EE) and scalability for high-volume processes are needed, offering a robust engine for managing long-running and human-centric tasks.