How to add two java.lang.Numbers?
<p>I have two Numbers. Eg:</p>

<pre><code>Number a = 2;
Number b = 3;
//Following is an error:
Number c = a + b;
</code></pre>

<p>Why arithmetic operations are not supported on Numbers? Anyway how would I add these two numbers in java? (Of course I'm getting them from somewhere and I don't know if they are Integer or float etc).</p>
