Exercise 4:Create class Author with following instance variable and methods.Instance variables: name (String), email (String), and gender (char of either 'm' or 'f);Constructor: Author (String name, String email, char gender)Methods: getName(0), getEmail(), setEmail(), getGender(), toString().Then create class called Book is designed to model a book written by one author. It contains:Four private instance variables: name (String), author (of the class Author you have justcreated, assume that a book has one and only one author), price (double), and qty(int);Two constructors:Public Book(String name, Author author, double price)Public Book(String name, Author author, double price, int qty)public methods getName(), getAuthor(), getPrice(), setPrice(), getQty), setQty(), toString()Write the Book class (which uses the Author class written earlier). Also write a test drivercalled TestBook to test all the public methods in the class Book. Take Note that you have toconstruct an instance of Author before you can construct an instance of Book.

Author.java //create class Authorclass Author { //instance variables private String name;…

Create class Author with following instance variable and methods. Instance variables: name (String), email (String), and gender (char of ei Constructor: Author (String name, String email, char gender) Methods: getName(), getEmail(), setEmail(), getGender(), toString().

Create class Author with following instance variable and methods. Instance variables: name (String), email (String), and gender (char of ei Constructor: Author (String name, String email, char gender) Methods: getName(), getEmail(), setEmail(), getGender(), toString().

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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