Adding to an ArrayList / Searching to see if element exists and then also adding to it : <p>Using ArrayList  - I would like to accomplish the following using the adds and contains methods...</p>

<p>Essentially I want to add objects that have shipping prices attached to them ie.</p>

<pre><code>B("Baseball Bat", 0.8),
G ("Glove", 0.9),
H ("Helmut", 1.0),
</code></pre>

<p>If I add $100 worth of Baseball Bats and none are in the list it adds, if baseball bats are already in the list it just adds to the already existent amount...</p>

<p>Any and all insight would be much appreciated!</p>
