Java development example with Cloudflare Computer

[thesurenk]

Proposal

Summary

Add an examples/think-java example showing how Cloudflare Computer can provide a persistent Java workspace with JDK 21 and Maven running in a container.

Background and motivation

The repository demonstrates JavaScript and shell workflows, but it does not currently include a Java development example.

Java developers need a persistent project directory and access to standard tools such as Maven, JUnit, and Git. This example would show how a Durable Object stores the source files while a Cloudflare Container compiles and tests them.

Goals

• Provide a small Maven and embedded Jetty project.
• Use JDK 21, Maven, Git, and computerd in the container.
• Keep Java source files in a persistent Computer workspace.
• Demonstrate reading, editing, testing, and packaging the project.
• Follow the existing examples/think and examples/container patterns.
• Document local development and current preview limitations.

Example

A user starts the terminal client and requests:

Add a /health endpoint that returns {"status":"UP"}.
Add a test and make sure the Maven build succeeds.

The workspace keeps the Maven project at /workspace/starter. Java and Maven commands run in the container:

mvn -Dmaven.repo.local=/tmp/m2 test
mvn -Dmaven.repo.local=/tmp/m2 package

The project remains available when the user reconnects to the same workspace.

Would this example be useful for the repository? I’m happy to adjust it based on feedback before opening a pull request.

Fork: https://github.com/thesurenk/computer/tree/java-examples/examples/think-java