Develop a java program to define an abstract class Sum containing two abstract methods: int sumoftwo(int, int) int sumofthree(int, int, int) and a regular method, void display() Define a class Demo, that extends Sum class and implements all the methods. Also take an example to demonstrate the use of all the methods.

Develop a java program to define an abstract class Sum containing two abstract methods: int sumoftwo(int, int) int sumofthree(int, int, int) and a regular method, void display() Define a class Demo, that extends Sum class and implements all the methods. Also take an example to demonstrate the use of all the methods.

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 19RQ

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