I want to run a my strategy on EURUSD M15 chart.

I used below code:

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

            Set subscribedInstruments = new HashSet();
            subscribedInstruments.add(Instrument.EURUSD);
            context.setSubscribedInstruments(subscribedInstruments);

        }

@Override 
        public void onBar(Instrument instrument, Period period, IBar askBar, 
                IBar bidBar) throws JFException { 
            //first line 
            if (instrument != Instrument.EURUSD || period != Period.FIFTEEN_MINS) return; 
        }

But this code is not making any trade in history tester.

Also, I see my strategy status as pending.

How can I fix this?

I have tested that onBar method in historical tester receives bars with Period.FIFTEEN_MINS.

You may also check whether there are any messages being printed on java console. Java console can be turned on as described here.