Building Applications with QBits in QQQ 4.0
Use real component releases and test their metadata and behavior in a host application.
Updated for the QQQ 4.0 release review on September 10, 2026.
Components and templates
QBits package reusable Java metadata and behavior. The 4.0 release includes three source templates: application, data, and extension. Existing production QBits have separate migration schedules; neither a catalog badge nor a dependency that resolves proves 4.0 compatibility.
Integrate a real release
Review the component repository, POM, release notes, configuration, LICENSE, and NOTICE. Add its exact Maven dependency and invoke its producer after the host backends are defined. Validate the assembled QInstance and inspect the dependency graph for mixed QQQ versions.
Verify behavior in the host
Test the component's actual processes or customizers, permissions, errors, and persistence. Prefixes must cover all named metadata when multiple instances are supported. Document required infrastructure and credentials, without storing secrets in source.
The QBit tutorial walks through a real template. The current native qctl CLI does not establish the old qctl qbit add installation recipe; use component installation guidance.
