Learn CODENAME-ONE with Real Code Examples
Updated Nov 23, 2025
Architecture
Frontend: Codename One UI components rendered natively
Backend: Java/Kotlin business logic
Build server converts code to platform-specific binaries
Event-driven model for UI and device interactions
Modular design supporting MVC and reusable components
Rendering Model
UI rendered natively on each platform
Event-driven UI with MVC architecture
Device APIs accessed via lightweight wrappers
Single codebase for multiple platforms
Build server produces platform-specific binaries
Architectural Patterns
MVC or MVVM for UI and logic separation
Cross-platform component abstraction
Cloud-based build server for compilation
Event-driven user interactions
Optional native extensions for advanced features
Real World Architectures
Enterprise mobile dashboards
Cross-platform internal business apps
Consumer apps requiring multi-device support
Apps using camera, GPS, and sensors
Prototyping MVPs for startups
Design Principles
Write once, run anywhere
Native compilation for all platforms
Rich cross-platform UI components
Cloud build server simplifies compilation
Java/Kotlin-centric development
Scalability Guide
Modular UI components
Reusable Java/Kotlin business logic
Lazy-load screens for performance
Optimize data access and storage
Profile app performance on devices
Migration Guide
Update Codename One plugin and libraries
Refactor deprecated APIs
Test builds on all target platforms
Verify native extension compatibility
Update UI themes if needed