Java Observer Update function
<p>I have a class that implements observer, and of course it needs to have the update function:</p>

<pre><code>public void update(Observable obs, Object obj);
</code></pre>

<p>Can someone please explain what do the two parameters stand for?
Observable is my observable of course, but, how can I access my observable fields through this Observable obs object?
And what is Object obj?</p>
