Java Development

[sebas2]

When I import java.rmi.server on a BlackBerry project it says "the import java.rmi.server cannot be resolved" (whereas in a normal Java project it works). Is java.rmi.server not supported on BlackBerry?

[peter_strange · Accepted solution]

Not supported, sorry.

Look at the API, here it is for the latest release (7.1):

http://www.blackberry.com/developers/docs/7.1.0api/

[sebas2]

Too bad

[sebas2]

Hey how about JMS:

http://java.sun.com/developer/technicalArticles/Ecommerce/jms/

It seems available as a separate download. Would it work on BB?

Really I just need a way to communicate between two processes, and would like to avoid pipes and sockets. Any other suggestions?

[peter_strange]

Inter Process Communication is usually done using Global Events if the processes are completely different applications, or just a shared Queue if within an application.  Do a quick search on "Global Events" and  "IPC" on the forum to find out more. 

[sebas2]

The two processes are of my app. Which queue are you talking about?

[peter_strange]

One you create yourself.  There is nothing built-in that you can use.

[sebas2]

What underlying mechanism would you recommend for creating such a queue? Sockets? Pipes? Or is there a native (C++) API for this that can be used from Java through JNI?

[peter_strange]

Sorry, none of the above....

I would use RuntimeStore to create a simple collection Object that you treat as a queue - a Vector for example.

Here is how to create a Singleton in RuntimeStore that you use for this purpose:

http://supportforums.blackberry.com/t5/Java-Development/Create-a-singleton-using-the-RuntimeStore/ta...

I suspect there are various samples of Patterns that you can use to use this Collection to bump the Listening process as you wish - I'm not great on these sorts of things so I would not listen to my advice on how to do it.

And do a search for IPC on the forum.  Similar questions to this have been asked before and you will find the answers enlightening I think.