Getting Started with QQQ 4.0
Run a reference application and make a small tested metadata change.
Updated for the QQQ 4.0 release review on September 10, 2026.
Prepare the tools
Use Java 21, Maven 3.8 or later, and Git. Docker is needed for framework integration tests. The first build downloads dependencies and runs checks, so completion time depends on the machine and network.
Run a real reference project
The source sample quickstart pins a public candidate revision and starts an H2 application with synthetic data and explicit local mock authentication. Open the dashboard on port 8000 and try Person records and Greet Interactive.
The first application tutorial uses the separate MySQL starter. It includes the database schema, environment settings, packaged JAR command, and a persistence readback check.
Make one change
Change a table label, rebuild, and verify it in the running dashboard. Then add a field with a matching schema change and test. Use the table and process guides for real 4.0 signatures.
Configure real authentication, permissions, recovery, and operational checks before using application data. The learning sample is not a production deployment checklist.
