gistfile1.txt

public NextCommand(String fileName) throws FileNotFoundException {
  	if (fileName.length() > 0){
		scan = new Scanner(new FileReader(fileName));

		while (scan.hasNextLine()) {
			String holder = scan.nextLine();
			if (holder.substring(0, holder.indexOf(" ")).equalsIgnoreCase("do")) {
				Command newCmd = new Command(holder);
				stackerz.push(newCmd);
			} else {
				Command newCmd = new Command(holder);
				stackerz.push(newCmd);
			}
		}
		}
		while(!stackerz.isEmpty()){
			reverse.push(stackerz.pop());
		}
	}