I would really like to start using the JForex API and develop some automated trading systems, but I don't know where to start.
The link to the JavaDocs of the API alone won't let me create a working system. Where can I get the packages and how do I implement the compiled java source files?

Another questions I got:
I have only a demo version that will expire in 2 weeks. But that's definitaly too short to get used to the trading platform and JForex. Is there a possibility to get a loner testing period?

I study computer science and am experienced in developing with Java. Beside that, I have also some experience with developing trading systems in MQL for MetaTrader 4. Only problem ist, that I have no clue where to get started. Any help welcome!

Thanks in advance,

Adam

Please take a look at the provided examples at https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=7
A strategy can be written in built-in JForex editor or in any Java IDE. To write a startegy in the IDE, please take a look at this solution https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=5&t=170
You may register a new DEMO account in 2 weeks, at the expiration. To have a permanent DEMO account, please speak to your accounting manager.

After we test it using the history data,could we run it on the demo account?

Yes, sure.
Just right mouse click on Services branch in Workspace tree and select "Open Service". Attach your strategy to the tree. Right mouse click on the attached startegy and select Run.