Hi, sometimes Jforex show an Exception (java.lang.NullException) on the following line:

Void buyUSD() throws JFException{
.......
......
double precio = history.getLastTick(instrument).getBid(); <----- here
......
......
}

this happend just sometimes. can anyone knows why?

Best Regards

If the instrument just has been subscribed, there may not have been any ticks for the instrument.

Hi,

The problem remains

void buyGBP()throws JFException{

Instrument instrument = Instrument.EURGBP;
.....
.....
double price = history.getLastTick(instrument).getBid();

}

So, should i add Thread.sleep(XXXX);....before getLastTick??

Best Regards

You should call sleep while the history.getLastTick(instrument)=null, e.g.:

//wait max 10 secs
while(history.getLastTick(instrument) == null && i < 10){
    try {
        Thread.sleep(1000);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    console.getOut().println("Last tick for " + instrument + " at " + DateUtils.format(System.currentTimeMillis())+ " is null");
    i++;
}

Or alternatively you can do you processing as soon as you receive the first tick in the onTick of the respective instrument - this will not hold up your other strategy executions.