@Override
    public void completeUpdate(Instruction instruction) {

        PrintStream printStream = new PrintStream(out);

        switch (instruction){
            case Read:
                Scanner scanner = new Scanner(in);
                if(!scanner.nextLine().equals("\n")){
                    printStream.print("Illegal Input: Insert only one character!");
                }
                scanner.close();
                break;
            case Write:
                printStream.print("\n");
                break;
        }

    }

    @Override
    public void run() {

        Interpreter interpreter = new MyInterpreter(util.buildPipe(in), util.buildPipe(out));
        PrintStream printStream = new PrintStream(out);
        Scanner scanner = new Scanner(in);

        printStream.print("--------------------------\n  Interactive Ook! Shell\n--------------------------\n");

        if(scanner.nextLine().equals("Bananas")){
            printStream.print("Yippee!");
        }else if(scanner.nextLine().equals("Monkey")){
            printStream.print("Ouch!");
        }else{

            Optional<Instruction> optionalInstruction = parseLine(scanner.nextLine());

            if(optionalInstruction.isPresent()){

                interpreter.loadInstruction(optionalInstruction.get());
                if(scanner.hasNext()){
                    Optional<Instruction> o = parseLine(scanner.nextLine());
                    this.prepareUpdate(o.get());
                    interpreter.update();
                    this.completeUpdate(o.get());
                }

            }else{
                printStream.print("Invalid instruction: " + optionalInstruction.get().name());
            }

        }

        scanner.close();
    }