Lecture: 10 Theory: Inheritance Polymorphism. Static keyword. Final keyword. Abstract keyword Programming: Create a class Circle derived from Point class. Apart from data of Point class circle should store its radius. W rite constructor and appropriate methods .Also declare static final PI in this class to find area and circumference. Theses methods should be declared final. Create an abstract class called AbstractA, with a method called showData. Create a derive class from this class DerivedA with an integer as its member data. Write suitable constructors and methods.

DEFINE A CLASS MyString:NAME: MyString DATA MEMBERS: str[] // A CHARACTER ARRAY TO STORE MAXIMUM UPTO // 200 CHARACTERS len // TO STORE NUMBER OF CHARACTERS ON str[] MEMBER FUNCTIONS : MyString() //default MyString(String S) //TO INITIALIZE CHARACTER ARRAY BY THE //CHARACTERS OF STRING S int length() //TO STORE LENGTH OF STRING char charAt(int i) //TO RETURN CHARACTER AT 'i' int indexof(char ch) //TO RETURN INDEX OF CHARACTER 'ch' string substring(int startIndex,int endIndex) //TO RETURN A SUBSTRING DEFINE A CLASS Apseries:NAME: APseries DATA MEMBERS: a,d //TO STORE TWO VALUES MEMBER FUNCTIONS APseries() //DEFAULT APseries(double na,double nd) //TO INITIALIZE BY na,nd double nthterm(int n) //TO RETURN nth TERM double sum(int n) //TO RETURN SUM OF THE SERIES UPTO N void showseries(int n) //TO SHOW SERIES UPTO N TERMS ALONG WITH ITS SUM