Code Repository for Temporal 101 (Java)

It's important to remember that the example code used in this course was designed to support learning a specific aspect of Temporal, not to serve as a ready-to-use template for implementing a production system.

For the exercises, make sure to run temporal server start-dev --ui-port 8080 --db-filename clusterdata.db in one terminal to start the Temporal server. For more details on this command, please refer to the Setting up a Local Development Environment chapter in the course. Note: If you're using the Gitpod environment to run this exercise, you can skip this step.

Hands-On Exercises

Directory Name	Exercise
exercises/hello-workflow	Exercise 1
exercises/hello-web-ui	Exercise 2
exercises/farewell-workflow	Exercise 3
exercises/finale-workflow	Exercise 4

GitPod Environment Shortcuts

If you are executing the exercises in the provided GitPod environment, you can take advantage of certain aliases to aid in navigation.

Command	Action
ex1	Change to Exercise 1 Practice Directory
ex1s	Change to Exercise 1 Solution Directory
ex2	Change to Exercise 2 Practice Directory
ex2s	Change to Exercise 2 Solution Directory
ex3	Change to Exercise 3 Practice Directory
ex3s	Change to Exercise 3 Solution Directory
ex4	Change to Exercise 4 Practice Directory
ex4s	Change to Exercise 4 Solution Directory

Instructor-Led Demonstrations

Directory Name	Description
demos/service-workflow	Shows a Workflow that uses a microservice

Examples for Self-Study

Directory Name	Description
samples/greeting	The Java Interface and Implementation with business logic for first Workflow
samples/retry-policy	Example of a Workflow that has a custom Retry Policy

Reference

The following links provide additional information that you may find helpful as you work through this course.

• General Temporal Documentation
• Temporal Java SDK Documentation
• Java Language Documentation
• GitPod Documentation: Troubleshooting

Exercise Environment for this Course

You can launch an exercise environment for this course in GitPod by clicking the button below:

Alternatively, you can follow these instructions to set up your own Temporal Cluster with Temporal CLI, which you can use as an exercise environment.