Hello,

I'm new to JForex and I'm not quite sure if this is a bug or I'm simply missing some step in making my strategy work. The problem is that when I start a strategy and try to add an indicator, the chart object is null. Here is what I do...

First I connect and then subscribe to an instrument and start the strategy with this code:

        ...
        Set<Instrument> instruments = new HashSet<Instrument>();
        instruments.add(Instrument.EURUSD);
        client.setSubscribedInstruments(instruments);
        client.startStrategy(new MyStrategy());

In the strategy class MyStrategy in the method onStart I have put this code:

        indicators = context.getIndicators();
        IChart chart = context.getChart(Instrument.EURUSD);
        chart.addIndicator(indicators.getIndicator("STOCH"));

The problem is that chart is null and when trying to add the indicator an exception is thrown. I have searched for a solution for this problem, but I didn't find anything. Moreover, all examples that I found do it in this way. Is there a need to add this chart somehow before getting it from the context? I tried to find a way to add a chart but I didn't came upon an appropriate method. Or I may miss something else?

Please help and thank you in advance!

You can't access charts from Standalone API. You can do this only when backtesting with TesterMainGUIMode.

Actually, I don't need to use chart but indicators and the only way I found to use indicators in the code is by adding them to a chart. Is there a way to use indicators in a strategy used from standalone API? If so, please provide some details.

That is not the case, you can get indicator values regardless if they are plotted on the chart or not.
See: https://www.dukascopy.com/wiki/index.php ... Indicators

Thank you very much for the quick answers - they were helpful!