java.util.InputMismatchException

[oll3i]

Scanner sc = new Scanner("konta//"+NumerKonta+".txt");
double sr_dost = sc.nextDouble();

why i get the error here ?
i wanna look for a double in a file

[DeMan]

have you tried testing sc.hasNextDoubl e() to see if there is a valid token?

also (although the API is not 100% clear (the examples at the top contradict what thwe methods explain, as I read it)), you may need to get rid of "rubbish" input (the examples suggest you don't need to , but I read the method to mean that it only tests the next token, and nothing more) eg:

while(sc.hasMoreTokens())
{
  if(sc.hasNextDouble())
  {
    x = sc.nextDouble();
  }
  else
  {
    sc.next();
  }
}

}

[oll3i]

thank u
i used

while(sc.hasNext())
{
  if(sc.hasNextDouble())
  {
	  sr_dost = sc.nextDouble();
  }
  else
  {
    sc.next();
  }
}

and it works

[DeMan]

Good stuff, that was lucky....