Compiling multiple java files and jar files

[cache]

Hey ,
I am working on a project that involves porting a java program on arduino. The problem is that I am new to all of this. So i have a question. Is it possible to compile more than one java program on HaikuVM and upload the hex to arduino ? Also i was thinking is it possible to compile .jar files using Haiku ? Any help / suggestions would be appreciated.

Thanks in advance
Cache

[genom2]

Compiling more than one Java program into one (third) program is not a question of HaikuVM but of Java programming. Consider this:

public class Program1 {
    public static void main(String[] args) {
        System.out.println("Hello ");
    }
}

and this:

public class Program2 {
    public static void main(String[] args) {
        System.out.println("World!");
    }
}

Both can be called from within this:

public class Program3 {
    public static void main(String[] args) {
        Program1.main(null);
        Program2.main(null);
    }
}

Hope this is of some help.

Kind regards
Bob Genom

[cache]

Hey Bob ,
Thanks for the info !! My other quesstion is how to compile a java fn which calls a .jar file in haiku. Will the compiler be able to also compile the .jar file and convert it into .hex file for me to upload into Arduino ? Please do enlighten me ! Also please tell me if I am not clear with my question !

[genom2]

Hello Cache,

I found a non elegant solution to include a JAR file. This is how it works:
1) put your JAR file (let's call it 'mylib.jar') into ./lib/nxt.
2) Patch file ./bin/makeclasses.mk from:
...main\java;$(NXJ_HOME)\lib\nxt\classes.jar;$(NXJ_HOME)\bootstrap\src...
into
...main\java;$(NXJ_HOME)\lib\nxt\classes.jar;$(NXJ_HOME)\lib\nxt\mylib.jar;$(NXJ_HOME)\bootstrap\src...

As said, it's not elegant (but it works). So I will offer a more elegant solution in the next release of HaikuVM, comming soon.

I hope this is of some (intermediate) help.

Kind regards
Bob Genom

[cache]

Hello Bob ,
Thank you for taking time and helping me sort the issue with this workaround. I have not yet tried this. I will try it and tell you how it goes. definitely this is of great help to me !!

Thanks
Cache