public class Main extends Canvas {

    //Static Variables
    public static Main main;

    public static String name = "Game";
    public static double version = 1.0;

    public static int FPS;

    //Object Variables
    private JFrame frame;

    private boolean running;

    private int screenX;
    private int screenY;

    private int x = 0;

    //Constructor
    public Main() {
        setSize(new Dimension(500, 500));
    }

    //Main Method
    public static void main(String[] args) {
        main = new Main();

        main.init();
    }

    //Object Methods
    private void init() {
        frame = new JFrame(name);
        frame.setSize(500, 500);
        frame.setResizable(false);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.add(main);

        loop();
    }

    public void loop() {
        running = true;

        int fps = 0;

        long timer = System.currentTimeMillis();
        long lastTime = System.nanoTime();

        final double ns = 1000000000.0 / 60;
        double delta = 0;

        while (running) {

            long now = System.nanoTime();
            delta += (now - lastTime) / ns;
            lastTime = now;

            while (delta >= 1) {

                if (fps <= 60) {
                    fps++;

                    update();
                    frame.repaint();

                    delta--;
                }
            }

            if (System.currentTimeMillis() - timer > 1000) {
                timer += 1000;

                log("Running at " + fps + " FPS and UPS");

                FPS = fps;

                fps = 0;

            }
        }

    }

    public void update() {
        screenX = frame.getWidth();
        screenY = frame.getHeight();

        x++;

        if (x >= 500) x = 0;

        log("update");

        //update gametstate
    }

    public void log(String string) {
        System.out.println("[" + name + "] [" + version + "] " + string);
    }

    public void log() {
        System.out.println("[" + name + "] [" + version + "]");
    }

    @Override
    public void paint(Graphics graphics) {
        graphics.setColor(Color.WHITE);
        graphics.fillRect(0, 0, screenX, screenY);

        //update gamestate

        graphics.setColor(Color.BLUE);
        graphics.fillRect(0, 200, x, 300);
        log("rendered");
    }