We develop a first prototype in the IntelliJ project 'jade-tutorial'.
Q: In the code editor references to java, String, Object etc. cannot be resolved by IntelliJ...
A: As we share the project files over SVN (especially baall-manager.iml) we need to name the java SDK used by IntelliJ "1.6 (1)" (see jdkName in baall-manager.iml). In order to rename your local SDK settings go to File->Project Structure - Platform Settings/SDKs and change the Name to "1.6 (1)".
Q: How do I install ROS?
A: Check out this introduction.