Java Object Store in some Collection
<p>I have some objects:</p>

<pre><code>Yacht y = new Yacht(2000, 420, 120);
BigShip bs = new BigShip(10000, 150, 3000);
Car c = new Car(2000, 185, 4);
Airplane a = new Airplane(4000, 30000, 256);
</code></pre>

<p>Can I store these objects in some Collection like List...</p>
