Temporal Java SDK development documentation
These Temporal Java SDK feature guides aim to show how to use Temporal features when developing Temporal Applications.
Core application
The Core Application feature guide shows how to use the basic building blocks of a Temporal Application (Workflows, Activities, and Workers).
- How to develop a Workflow Definition in Java
- How to develop a basic Activity
- How to start an Activity Execution
- How to develop a Worker Program in Java
Temporal Client
The Temporal Client feature guide shows how to connect to a Temporal Service and start a Workflow Execution.
- Connect to a development Temporal Service
- Connect to a custom Namespace
- Connect to Temporal Cloud
- Start a Workflow Execution
Testing suites
The Testing suite feature guide shows how to set up the testing suite and test Workflows and Activities.
Failure detection
The Failure detection feature guide shows how your application can detect failures using timeouts and automatically attempt to mitigate them with retries.
Messages
The Workflow messages feature guide shows how to send messages to and read the state of Workflow Executions.
- How to develop with Signals
- How to develop with Queries
- What is a Dynamic Handler?
- How to develop with Updates
Asynchronous Activity Completion
The Asynchronous Activity Completion feature guide shows how to complete Activities asynchronously.
Versioning
The Versioning feature guide shows how to change Workflow Definitions without causing non-deterministic behavior in current long-running Workflows.
Observability
The Observability feature guide shows how to configure and use the Temporal Observability APIs.
Debugging
The Debugging feature guide covers the various ways to debug your application.
Schedules
The Schedules feature guide shows how to schedule Workflows, run Workflows on a Cron, and to delay the start of a Workflow.
Data encryption
The Data encryption feature guide provides guidance on how to support compression, encryption, and other data handling by implementing custom converters and codecs.
Child Workflows
The Child Workflows feature guide shows how to spawn a Child Workflow Execution and handle Child Workflow Events.
Continue-As-New
The Continue-As-New feature guide shows how to continue the Workflow Execution with a new Workflow Execution using the same Workflow ID.
Timers
The Durable Timers feature guide shows how to use Timers and sleep within Workflows.
Side Effects
The Side Effects feature guide covers how to use Side Effects in Workflows.
Namespaces
The Namespaces feature guide covers how to create and manage Namespaces.