Type of files created in a blackberry project

I created my first Hello world project for BlackBerry and following files were created in the deliverables folder:

 - HelloWorld.cod
 - HelloWorld.cso
 - HellowWorld.debug
 - HelloWorld.jad
 - HelloWorld.jar 
 - HelloWorld.rapc

What is the purpose of each of these files? I know at least that th开发者_C百科e jar file must be deployed as a mobile application. But what about all other files?

The .cod file is basically BlackBerry's proprietary version of the .jar file. (This is usually the version downloaded from the App Store.)

The .cso file is a helper file used when signing the application. (It says which keys are needed.)

The .debug file is a helper file used when running the application in the debugger.

The .jad file describes the application to help the device know if it's compatible. (If you were downloading onto a BlackBerry from a website instead of the App Store, this is the file you'd point your link at, which would contain the path to the cod/jar.)

The .jar file is the main application file for MIDP, which is sort of a generalised mobile java runtime environment.

The .rapc is a helper file used by the BlackBerry JDE when it's compiling/building the project.