The last question, I hope, for this strategie.

I have problems when the entry price is not ended on 0.5 or 0. I wanted to use math.floor (x) in order to round the entry price and set a right stop loss price. But the compiler has problems with it. Is there any other function to round variables?

Thanks

A Dukascopy API doesn't provide any specific math methods, but Java does!
Please look at the java.lang.Math class which has all needed rounding functions.
Math must be written starting with capital letter.
Here is a function, that rounds the value till half pip

public static double round05Pips(double value) {
  int pipsMultiplier = value <= 20 ? 10000 : 100;
  int rounded = (int) (value * pipsMultiplier * 10 + 0.5);
  rounded *= 2;
  rounded = (int) (((double) rounded) / 10d + 0.5d);
  value = ((double) rounded) / 2d;
  value /= pipsMultiplier;
  return value;
 }