[trill]

Why not put a character or space in between the command and parameter? That way you can utilize Java's Split function and do something like the below.

iTurtle.txt

Code:

U
D
N-13
S-10
E-3
W-9

Sample Java code

Code:

enum Commands {U, D, N, S, E, W};
String thought;
while ((thought = turtleBrain.readLine()) != null){
  String[] instructions = thought.split("-");
  Commands com = instructions[0];
  switch (com) {
    case U: Romina.setPenState("u"); break;
    case D: Romina.setPenState("d"); break;
    case N: Romina.moveNorth(instructions[1]); break;
    case S: Romina.moveSouth(instructions[1]); break;
    case E: Romina.moveEast(instructions[1]); break;
    case W: Romina.moveWest(instructions[1]); break;
    default: System.out.println("Invalid Command"); break;
  }
}

Greetings.