Hi
I don' know how to use "bar reading" functions. Im comfused.

A) reading completed bars from history?
B) reading (uncompleted"future") bars "real time" after order close?

?
What if i want 5 bars or 3 bars ? (/5 min) instead of 1 and compare price ?

How to close orders automatically - after reached SL andTP or 4 hours? I only found in Miliseconds.

I can't find any code for this.

It is described here
https://www.dukascopy.com/wiki/#History_bars

To get the currently forming bar time parameter of
getBars(Instrument instrument, Period period, OfferSide side, Filter filter, int numberOfCandlesBefore, long time, int numberOfCandlesAfter)
must be equal to the start time of currently forming candle.

    public void onTick(Instrument instrument, ITick tick) throws JFException {        
        long lastBarStart = history.getBarStart(Period.ONE_HOUR, tick.getTime() );
        print("last bar start", lastBarStart);
        List<IBar> bars = history.getBars(Instrument.EURUSD, Period.ONE_HOUR, OfferSide.BID, Filter.NO_FILTER, 3, lastBarStart, 0);
        for(IBar bar : bars) {
            print(bar);
        }                
    }

See a full example in the attachment.

Thanks.
Why on tick()?
What does print(bar) do?

onTick() is used to see how IBar.getClose() price changes for the bar with index 0.
print(bar) prints bar's data, print is custom method given in the attached strategy.