Super-class in java

In Java, there is a concept of Inheritance which is implemented through a superclass and subclass definition and achieved through the object creation process, programmatically.

-- Inheritance allows to organize and structure the software program in an hierarchical manner through the concept of super class and subclass.

-- Through inheritance a new class inherits some existing behavior and states of another class which is called as the superclass. This promotes the concept of code reusability.

-- Creation of a  superclass saves work as the already existing class allows the new class to inherit all the properties of the old general class.

-- Superclass allows various subclassed objects to share certain things in common.

-- Superclass in java allows :
         
         to introduce better data analysis, 
         reduction in development time, 
         less coding efforts,
         better performance.

Read more at :
http://www.roseindia.net/java/language/inheritance.shtml