Important: JDK 1.8 is causing some odd issues with the designer and during build. We currently recommend using the latest update of Java 7.
Download & install IntelliJ/IDEA, notice that Android Studio will not work.
Install the plugin using The Plugin Center
Use the search functionality in the plugin center to find and install the Codename One plugin.
Register in the build server in order to send your builds to the device.
Get help in our discussion group!
Running the Codename One Demos In Eclipse
Eclipse & NetBeans now contains most of the demos in the new project menu so you can try most of the demos right from the IDE without any download. However, if you have a demo that isn't featured in the IDE you can follow the steps below to run them in Eclipse.
Create a new Codename One project in Eclipse and give it the exact name of the demo you wish to create.
Open the file codenameone_settings.properties in a text editor and look for codename1.packageName use the value of that section as the package name in the wizard and use the demo name as the value of the main class create a blank manual project.
Once finished delete all the source/resource files in the newly created Eclipse project and copy all the sources from the demo into the new projects source dir.
Copy the codenameone_settings.properties and icon.png files and override the ones in the Eclipse project