jBPM 4 - API 4.4 API

Packages

org.jbpm.api	the jBPM API, Start by creating a Configuration, build a ProcessEngine from that, and then you can find the workflow methods on the services like ExecutionService, TaskService.
org.jbpm.api.activity	interfaces for implementing customized runtime behaviour of activities.
org.jbpm.api.cmd
org.jbpm.api.history	interfaces related to the HistoryService.
org.jbpm.api.identity	User and Group interfaces related to the IdentityService
org.jbpm.api.job	Job, Message and Timer interfaces related to the ManagementService
org.jbpm.api.jpdl	specific jPDL interfaces
org.jbpm.api.listener	interfaces for implementing event listeners, which represent runtime behaviour that can be associated as listeners to process events.
org.jbpm.api.model	common process execution model interfaces used in services and delegation interfaces like ActivityBehaviour and EventListener.
org.jbpm.api.task	interfaces related to the TaskService