JNA

[Dwayne Barsotta]

Ever since I started going back to school and learning computer science I have wanted to concentrate my programming on automotive.  One issue with Java and the automotive field everything is written in other languages.

One of my personal goals is to write a program that connects to a truck over the J1939 protocol and reads data.

To start with I need to load an api written in C I believe in Java.  I need to use jna or jni to do this.  I'm leaning towards jna.

Is there anyone here the can point me in the way of good articles tutorials on jna.  It's hard to find.

Second, anyone in the automotive or trucking industry already could lend some tips.  I've also spent some money getting the info from SAE but I still need to get documents j1939/72 through I think 78.  Basically the the sae documents for the programmatic connection as well as decyfering the returned data and pgn numbers.

So far SAE has charged me $80*4 for 4 documents plus around well a lot of money for a recorded seminar and a course were half the material didn't work.  

Any help would be great. Thank you