Hey Again my question is: can i convert a string to a int or can i calculate with a string? because when i try to calculate this: Code:java p.sendMessage("Anzahl: " + anzahl); p.sendMessage("Preis: " + (anzahl * preis1)); theres an error: The operator * is undefined for the argument type(s) String, int how can i calculate the String "anzahl" with the int "preis1" Code:java int preis1 = 2; String anzahl = args[0];