Learn CODENAME-ONE with Real Code Examples

Install Java Development Kit (JDK) 11 or higher

Install preferred IDE (IntelliJ, Eclipse, NetBeans)

Install Codename One plugin for the IDE

Create a new Codename One project via IDE wizard

Use Codename One simulator and build server to run/test apps

Install JDK 11+

Install preferred IDE and Codename One plugin

Set up project with Codename One wizard

Configure build server credentials

Run app locally in simulator and on devices

codenameone_settings.properties - project configuration

src/ - Java/Kotlin source code

lib/ - external libraries

theme/ - UI themes

build/ - output binaries from build server

Codename One IDE plugin commands for build and deployment

Invoke cloud build server for iOS/Android

Simulator run for local testing

Generate certificates for iOS signing

Export app bundle for app stores

Use resource bundles for multiple languages

Localize dates, numbers, and text

Support right-to-left languages

Dynamic language switching possible

Maintain separate theme/layouts for different locales

Supports screen readers

Keyboard navigation for desktop/web

Accessible UI components

Follow mobile accessibility guidelines

Test accessibility on all platforms

UI themes using Codename One Designer

Cross-platform layout and component styling

Responsive UI with flexible layouts

Custom component styling via CSS-like syntax

Platform-specific styling handled automatically

Frontend state via Codename One components

Backend logic via Java/Kotlin

Persistent state using storage APIs or SQLite

Event-driven UI updates

Optional integration with cloud/state services

Local storage via SQLite or JSON files

Cloud sync via REST or GraphQL

Device API access through Codename One wrappers

Offline-first data handling

Secure storage for sensitive information