External Jars in program

Hello,
Sorry I know it's not an eclipse forum, but I couldn't get answers anywhere, so I hope someone here can help.
I have browsed the net a lot, and found that a lot of people are having similar issues, however I did not manage to make this work .
I have an rcp application which is just a GUI for using my application.
I also have another eclipse java project which has the core classes.
I want people to be able to use either the GUI or directly the JAR file created out of the second project.
Now the troubles :
the second project uses external jars, which I do NOT want to be packaged. I want the users to get those jar separatly and place them in the appropriate folder.
The first one (GUI) uses the second project (well it uses its jar file).
Inside eclipse I can make it work fine, problems come whenever I want to export either the GUI or the JAR from the second project.
What I would like to achieve is the following :
1) If they want to use the GUI, then there is a lib folder in its tree where they have to place all the external jars (and maybe the second project jar too, well I guess)
2) If they want to import the second projet jar in their own application, they have to get the external jars too and place them .... (somewhere? same directory I believe)
Now I have tried everything I found on the net without success : Add External Jars, add Jar, runtime tab, build-path, class-path, Project dependency, manifest etc ... in second or both projects.
I know the solution is somehow in those, but I just can't get it to work. Usually I get export errors on the RCP, sometimes its during execution.
If anyone could explain me step by step what I should do to achieve what I need, I would greatly appreciate it because it's kind of driving me mad.
Marh

On 22-Jun-11 06:11, [email protected] wrote:
> Hi,
>
> I am new to Java world and surely to eclipse, after years using Delphi.
> I am learning to become a real Java developer utilizing eclipse. In my
> starting pace I found so amuzed and also confused about Java. Every try
> to write a simple program I always use so many external JARs in my Java
> project. Is there any pitfall using exessive external JARs in a project
> ? And how can I know not to use certain external JAR without
> try-and-error removing one by one ?
>
> Thanks in advance,
> Zhou.X.B.
Don't worry about how many JAR files you end up using. Don't go out of
your way to add JARs unless you know you need them. Typically, you write
code based on what you learn from research and add the JARs you need.
Usually, you won't acquire a lot of unnecessary JARs, but even if you
do, it doesn't hurt (except for a bit of diskspace).
Later, you'll discover which JARs you did or didn't need.
In short, don't worry about this. Just move ahead. You're on the right
track since you chose Java in the first place.
;-)

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