Build Your App Theme Without a Display Server
The Codename One CSS compiler now runs fully headless. Remove virtual-display setup from theme builds and review the visual details that a compiler change can affect.
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PGO for Faster Apps and Generational/Adaptive GC
Build faster native apps with profile-guided optimization on Pro and Enterprise. Enable PGO for iOS, macOS and Linux, then explore adaptive GC and its memory tradeoffs.
Try Real Java in Your Browser, Compiler Errors Included
The Playground compiles Java to bytecode and translates it inside the browser. Try records and lambdas, inspect diagnostics and understand the supported runtime API.
How Do You Test Spring Compatibility?
Write behavior tests in your Spring application, then run the same assertions against its Codename One port. Check responses, failures and state on the JVM and in a native build.
Update DB Schema in Production with Flyway like Syntax
Use ordered SQL migrations on client and server, validate schema history and handle skipped releases. Understand baselines, repeatable scripts and transactional limits.
Easy Full Stack Authentication and Login in the Style of Spring
Connect client token renewal to server access rules, persistence and end-to-end tests. Understand the supported security mechanisms and the different browser testing boundary.
Android on iOS, Web & Desktop Efficiently and for Free
Compile Android apps for iOS, web and desktop with a free, open-source compatibility layer. Try the browser demo, see the iOS binary size and migrate one screen at a time.