How to extend two classes
<p>How to extend two classes in a single class
    e.g.</p>

<pre><code>Class1- Common Class for all the other classes
Class2-(Where I use Class2 Extends Class1)
Class3-(Where I use Class3 Extends Class1)
Class4-(Where I use Class4 Extends Class1)

Suppose I introduce a ClassA whose methods are common for Class 2,3,4     
then how do I extend two classes
Class2-Class2 Extends Class1 Extends ClassA
Class3-Class3 Extends Class1 Extends ClassA
Class3-Class4 Extends Class1 Extends ClassA
Note that Class1 and ClassA have no methods in common.
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