Cannot refer to a non-final variable inside an inner class defined in a different method

Question

Edited: I need to change the values of several variables as they run several times thorugh a timer. I need to keep updating the values with every iteration through the timer

Answer 1

Good explanations for why you can't do what you're trying to do already provided. As a solution, maybe consider:

public class foo
{
    static class priceInfo
    {
        public double lastPrice = 0;
        public double price = 0;
        public Price priceObject = new Price ();
    }

    public static void main ( String args[] )
    {

        int period = 2000;
        int delay = 2000;

        final priceInfo pi = new priceInfo ();
        Timer timer = new Timer ();

        timer.scheduleAtFixedRate ( new TimerTask ()
        {
            public void run ()
            {
                pi.price = pi.priceObject.getNextPrice ( pi.lastPrice );
                System.out.println ();
                pi.lastPrice = pi.price;

            }
        }, delay, period );
    }
}

Seems like probably you could do a better design than that, but the idea is that you could group the updated variables inside a class reference that doesn't change.