Error with instantiation in Java
<p>I'm having issues with the abstract class idea...I've attempted to use Eclipse, but this time the IDE is just messing it up.
I've got the files uploaded. 
They should be attempted to be compiled as this</p>

<ol>
<li>Container</li>
<li>Base Container</li>
<li>Height, and color exception</li>
<li>Round and square containers</li>
<li>client for containers</li>
</ol>

<p>I have the files uploaded here: <a href="http://bit.ly/nDiObk" rel="nofollow">http://bit.ly/nDiObk</a></p>

<p>Here is the error I'm getting:</p>

<pre><code>ClientForContainers.java:19: SquareBaseContainer is abstract; cannot be instantiated
                BaseContainer aContainer = new SquareBaseContainer(10.0);
                                           ^
ClientForContainers.java:31: RoundBaseContainer is abstract; cannot be instantiated
                aContainer = new RoundBaseContainer(10.0);
</code></pre>
