Inheritance in Java

  We can create a general class that defines traits common to a set of related items.

This class can then be  inherited by others, more specific classes, each adding those things that 

are unique to it

A classes that is inherited are called a super classes.  The classes that does the inheritance is 

called a sub classes. Therefore, a subclass is a specialized version of a superclass.

  To inherit a class, we simply incorporate the definition of one class into another by using the 

extends keyword.

  The general form of a subclass declaration is:

 class subclass-name extends super class-name

 { /*body of class*/ }

  We can specify only one super class for any subclass.

  This is because Java does not support multiple inheritance.