I have included code from the simple feed strategy into my onStart function (see below) and I get an error on compliation

12:27:19 Cannot refer to a non-final variable context inside an inner class defined in a different method

what does this mean?

THANKS



@Override
public void onStart(IContext context) throws JFException {

this.engine = context.getEngine();
this.console = context.getConsole();
this.history = context.getHistory();
this.context = context;
this.indicators = context.getIndicators();
this.userInterface = context.getUserInterface();

IFeedDescriptor rangeBarFeedDescriptor = new RangeBarFeedDescriptor(Instrument.EURUSD, PriceRange.TWO_PIPS, OfferSide.ASK);
context.subscribeToFeed(rangeBarFeedDescriptor, new IFeedListener() {
@Override
public void onFeedData(IFeedDescriptor feedDescriptor, ITimedData feedData) {
context.getConsole().getOut().println("range bar completed: " + feedData + " of feed: " + feedDescriptor);
}
});


}

You need to make both onFeedData parameters final. Consider using a java IDE in order to get instant fix suggestions in such cases, see:
https://www.dukascopy.com/wiki/#Use_in_Eclipse
https://www.dukascopy.com/wiki/#Use_in_NetBeans

Thanks

I'd really like to jst use the JFOREX IDe and making the parameters final does not help

public void onFeedData(final IFeedDescriptor feedDescriptor, final ITimedData feedData) {

context.getConsole().getOut().println("range bar completed: " + feedData + " of feed: " + feedDescriptor);

try { ..............................

It's up to you, but using ,for example, Eclipse IDE will at the very least save you time, which you need to wait on our response on this compile-time issue.
Please provide the full example strategy.

Hi Attached the bones of the strategy

I just need to pick ema values for last 3 bars on renko .. then place and close orders ... thanks but would also like to be able to print stuff out in console window

Thankyou


======================================

package jforex;

import java.util.*;

import com.dukascopy.api.*;
import com.dukascopy.api.feed.*;
import com.dukascopy.api.feed.util.*;
import com.dukascopy.api.IIndicators.AppliedPrice;
import com.dukascopy.api.indicators.IIndicator;
import com.dukascopy.api.indicators.IndicatorInfo;



public class RenkoStrategy implements IStrategy {
    
    private IEngine engine;
    private IConsole console;
    private IHistory history;
    private IContext context;
    private IIndicators indicators;
    private IUserInterface userInterface;
    
    @Configurable("Instrument 1")
    public Instrument currInstrument = Instrument.EURUSD;
    

    public void onStart(IContext context) throws JFException {
        
        

        this.engine = context.getEngine();
        this.console = context.getConsole();
        this.history = context.getHistory();
        this.context = context;
        this.indicators = context.getIndicators();
        this.userInterface = context.getUserInterface();
        
         IFeedDescriptor RenkofeedDescriptor = new RenkoFeedDescriptor(currInstrument, PriceRange.FIVE_PIPS, OfferSide.BID);
        
        context.subscribeToFeed(RenkofeedDescriptor,  new IFeedListener() {

            public void onFeedData(IFeedDescriptor feedDescriptor, ITimedData feedData) {
                
               // context.getConsole().getOut().println("range bar completed: " + " of feed: " + feedDescriptor);
                
                try {
                                  
                Object[] emaFeed0 = indicators.calculateIndicator(feedDescriptor, new OfferSide[] { OfferSide.BID }, "EMA",new AppliedPrice[] { AppliedPrice.CLOSE }, new Object[] { 13 }, 0);             
                Object[] emaFeed1 = indicators.calculateIndicator(feedDescriptor, new OfferSide[] { OfferSide.BID }, "EMA",new AppliedPrice[] { AppliedPrice.CLOSE }, new Object[] { 13 }, 1);
                Object[] emaFeed2 = indicators.calculateIndicator(feedDescriptor, new OfferSide[] { OfferSide.BID }, "EMA",new AppliedPrice[] { AppliedPrice.CLOSE }, new Object[] { 13 }, 2);
                             
            
             } catch (JFException e) {
             }
              

            }
        });

      
    }

    public void onAccount(IAccount account) throws JFException {
    }

    public void onMessage(IMessage message) throws JFException {
    }

    public void onStop() throws JFException {
    }

    public void onTick(Instrument instrument, ITick tick) throws JFException {
    }
    
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
    }
}

https://www.dukascopy.com/wiki/#Indicator_Calculation/Calculate_on_price_feed_by_candle_interval
https://www.dukascopy.com/wiki/#Set_Market_Order
https://www.dukascopy.com/wiki/#Close_Orders
https://www.dukascopy.com/wiki/#IConsole/Logging_values