ConnectionMockingPrototype

gistfile1.java

public abstract class Arduino {

    private static int speed;

    public static void setSpeed(int a) {
        speed = a;
    }

    public static int getSpeed(){
        return speed;
    }

    public static void printSpeed(){
        System.out.println(speed);  
    }

    public static void main(String[] args) throws InterruptedException {

        USBConnection usb = new USBConnection();

        Thread usbThread = new Thread(usb);

        usbThread.start();

        while(true){
            printSpeed();
            Thread.sleep(1000);
        }
    }
}

interface USB {
    public void sendSpeed(int a);
}

class USBConnection implements USB , Runnable {

    public void sendSpeed(int a){
        Arduino.setSpeed(a);
    }

    @Override
    public void run() {

        int i = 0;

        while(true){            
            sendSpeed(i);
            i++;            
            
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}