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POCannot refer to a non-final variable inside an inner class defined in a different method
 

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    <p>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. I cannot set the values to final as that will prevent me from updating the values however I am getting the error I describe in the initial question below:</p> <p>I had previously written what is below:</p> <blockquote> <p>I am getting the error "cannot refer to a non-final variable inside an inner class defined in a different method".</p> <p>This is happening for the double called price and the Price called priceObject. Do you know why I get this problem. I do not understand why I need to have a final declaration. Also if you can see what it is I am trying to do, what do I have to do to get around this problem.</p> </blockquote> <pre><code>public static void main(String args[]) { int period = 2000; int delay = 2000; double lastPrice = 0; Price priceObject = new Price(); double price = 0; Timer timer = new Timer(); timer.scheduleAtFixedRate(new TimerTask() { public void run() { price = priceObject.getNextPrice(lastPrice); System.out.println(); lastPrice = price; } }, delay, period); } </code></pre>
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    1. USJosh Lee
    1. USAnkur
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    1. COWhat I am asking is, how do I get a variable in a timer that I can continuously update.
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      1. USAnkur
    2. CO@Ankur: the simple answer is "No". But you can achieve the desired effect using an inner class; see @petercardona's answer.
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      1. USStephen C
 

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