Inheritance in Java with Example

Inheritance in Java: Definition, Example & Syntax

Develop an inheritance hierarchy based upon a Polygon class that has abstract methods area() and perimeter(), and three instance variables of type int (number of dimensions), float (value of perimeter), and float (value of area). Your class must include a constructor method that initializes the int variable to an appropriate value.Implement classes Triangle, Quadrilateral, Pentagon, Hexagon, and Octagon that extend this base class (Polygon), with the obvious meanings for the area() and perimeter

10 Java Projects For Beginners (With Full Tutorials) - Comp Sci Central

Java Programs for Beginners