Object oriented programming

Define an inheritance relationship of a class Sphere in Java which is an inherited subclass of a Circle (30 points) Circle class contain a constructor with no arg and a constructor with double: radius, string class. name_object and boolean isfilled or not. Define get/set methods for this variable. Define method named getArea0 that returns the area of this circle. A method named toStringO that returns a string (30 points) The Sphere class will contain one variable: double: radius; Define constructor with no-arg description for the circle. and constructor with radius, name_object and isfilled. The get/set methods of data fields. Define methoc named getAreaO and getVolume 0 that returns the area and volume of sphere. A metho named toStringO that returns a string description of object