title: Using MediaTracker to cache images in Swing Application
body: <p>I have a Swing based financial ticker, that will display a financial symbol the price movement and an arrow for either up or down for each counter / company.</p>
  
  <p>This ticker can have a lot on counters (up to 100), and see the need to cache the images symbols to boost performance.</p>
  
  <p>I have tried following this <a href="http://www.javacoffeebreak.com/articles/mediatracker/index.html" rel="nofollow noreferrer">article</a> but fail to understand it, especially how  the MediaTracker class is going to cache the images. From what i can see, i place the images  in an array and still retrieve from the array.</p>
  
  <p>Does anyone know how it works and is supposed to be used?</p>