# Uses of Package
org.flowable.common.engine.api

Packages that use org.flowable.common.engine.api
Package
Description
org.flowable.common.engine.api
org.flowable.common.engine.api.engine
org.flowable.engine
Public API of the Flowable engine.
Typical usage of the API starts by the creation of a `ProcessEngineConfiguration` (typically based on a configuration file), from which a `ProcessEngine` can be obtained.
Through the services obtained from such a `ProcessEngine`, BPM and workflow operation can be executed:
`RepositoryService`: Manages `Deployment`s.
`RuntimeService`: For starting and searching `ProcessInstance`s.
`TaskService`: Exposes operations to manage human (standalone) tasks, such as claiming, completing and assigning tasks.
`IdentityService`: Used for managing users, groups and the relations between them.
`ManagementService`: Exposes engine administration and maintenance operations, which have no relation to the runtime exection of business processes.
`HistoryService`: Exposes information about ongoing and past process instances.
`FormService`: Access to form data and rendered forms for starting new process instances and completing tasks.
org.flowable.engine.delegate
Interfaces used to include Java code in a process as the behavior of an activity or as a listener to process events with `JavaDelegate`s.
org.flowable.job.api

- Classes in org.flowable.common.engine.api used by org.flowable.common.engine.api
  Class
  Description
  FlowableException
  Runtime exception that is the superclass of all Flowable exceptions.
- Classes in org.flowable.common.engine.api used by org.flowable.common.engine.api.engine
  Class
  Description
  Engine
- Classes in org.flowable.common.engine.api used by org.flowable.engine
  Class
  Description
  Engine
- Classes in org.flowable.common.engine.api used by org.flowable.engine.delegate
  Class
  Description
  FlowableException
  Runtime exception that is the superclass of all Flowable exceptions.
- Classes in org.flowable.common.engine.api used by org.flowable.job.api
  Class
  Description
  FlowableException
  Runtime exception that is the superclass of all Flowable exceptions.
  FlowableObjectNotFoundException
  An exception indicating that the object that is required or actioned on does not exist.