How do I split my strategy into multiple java files so that I can share methods between strategies? I'd like to take an object oriented approach to my design structure rather than a procedural process as seen from various examples so far.

The problem arise when I try to compile a file. The compiler forces the java class to implement IStrategy or IIndicator. Whereas I just want the class to act as an OO object.

Hi,
at the moment, it is possible to import external library's. Here is sample https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=7&t=225&p=3666&hilit=send+mail#p3666

Perhaps I was unclear. Here's an example.

Say

class Strategy1 implements IStrategy

. In Strategy1.java, I want to call method ManageRisk(IAccount, IOrder, IInstrument). It works fine if and only if ManageRisk() is in same .java file as Strategy1.

But if I create an external class file, Risk.java, to hold ManageRisk(), I would need to import com.dukascopy.api.* in Risk.java for using IAccount, IOrder, and IInstrument, etc. This is where the problem arise.

I tried to compile Risk.java in JForex and the compiler says that Risk.java needs to implement IStrategy or IIndicator.

Please, use an IDE (for example Eclipse) for development and creation your library.
Here is tutorial https://www.dukascopy.com/swiss/english/forex/jforex/library/
If you still have questions, please don't hesitate to ask.

If I use an IDE, can I load the developed strategy (in multiple files) into Historical Testing or Run it in the platform?

Hi Quantisan,

yes you can, we have been using netbeans of late and it has been working out well for use in the backtester, etc.. The IDE is very light compared to eclipse, but there are somethings to get used to when you have project dependencies and when those dependencies have dependencies. For now with a normal library project, I have created this library which I built to take care of trade information, etc. I use this library by putting it in my "files" folder (found within the Dukascopy defined strategies path).
Then within your Strategy class that implements IStrategy...put @Library("name_of_lib_in_files.jar") along with your import statements.

Hope this helps and if you end up going along with netbeans, feel free to pm me for some extra advice

all the best,
jUser

Thanks JUser. I will try Netbeans soon. is there any sample source code available in this forum relating to this question? Like how to use @Library etc.?

Yes,
here you will find samples:

• https://www.dukascopy.com/swiss/english/forex/jforex/tutorial/interfaces/
• https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewforum.php?f=10&sid=694f402becb9a326681d85974451d8f3
• https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewforum.php?f=5&sid=694f402becb9a326681d85974451d8f3
• https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewforum.php?f=18&sid=694f402becb9a326681d85974451d8f3

Here sample with @Library https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=7&t=225&p=3666&hilit=send+mail#p3666

Thank you for the link. But the URL to forum posts only lead to the index. Were they intended for individual post? If so, could you please repost the link?

Look at the last one https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=7&t=225&p=3666&hilit=send+mail#p3666
Other posts lead to forum topics where you can find lot of different samples.