What is the purpose of mixed constructors?
<p>What is the purpose of doing something like:</p>

<pre><code>Employee a = new OverTimeEmployee();
</code></pre>

<p>or </p>

<pre><code>OverTimeEmployee a = new Employee();
</code></pre>

<p>Where OverTimeEmployee is a subclass of employee?</p>

<p>and what is the proper name for it? I am guessing mixed constructor is not right</p>
