Create a class named Book that contains data fieldsfor the title and number of pages. Include get and setmethods for these fields. Next, create a subclassnamed Textbook, which contains an additional fieldthat holds a grade level for the Textbook and additionalmethods to get and set the grade level field. Write anapplication that demonstrates using objects of eachclass. Save the files as Book.java, Textbook.java,and DemoBook.java.

public class Book { //declaring instance variables private String title; private int pages;…

Answered: Create a class named Book that contains…

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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Create a class [Details] that have field variables for First Name, Last Name, Middle Name, and Birth Date. Then declare a constructor that accepts First Name, Last Name, Middle Name Then declare a default constructor that does nothing Create another class [Program] that instantiates the Details class and declare values in the variables depending to their usage. and do something about the one detail that cannot be declared with value when instantiating the object. then declare a Display method that will display all the details.
java programming.
Class Circle  A Circle will have a radius. The class will be able to keep track of the number of Circle objects created. It will also hold the total of the circumferences of all the Circle objects created.  It will allow a client to create a Circle, passing in a double value for the radius into the Circle constructor. If the value for the radius that is passed in is 0 or negative, then the radius will be set to a value of 999. The constructor should add 1 to the count of the number of Circles created. The constructor should call a method to calculate the circumference and then add the circumference for that object to an accumulator. In addition to the constructor, the Circle class must have the following methods that return a boolean value: isCongruent(Circle c) – Compares two Circle objects to determine if they are congruent (radii are equal). isValid() – the radius may not be 0 or negative. equals (Triangle t) – compares two Triangle objects…
Develop a set of classes for a college to use in various student service andpersonnel applications. Classes you need to design include the following:• Person—A Person contains a first name, last name, street address, zip code,and phone number. The class also includes a method that sets each datafield, using a series of dialog boxes and a display method that displays all of aPerson’s information on a single line at the command line on the screen
Java Code. Create a Driver class to use your Farm and Animal classes and create instances of them. In the main method do the following: Create a Farm of size 10 Create 5 Animal Objects with the details specified in the table below Add the 5 Animal objects to the Farm Call the printDetails method from the Farm to print all the Farm and Animal details.
Create an application named RecoveringDemo that declares objects of three types: Patient, Upholsterer, and FootballPlayer. Create an interface named IRecoverable that contains a single method named Recover(). Create the classes named Patient, Upholsterer, and FootballPlayer so that each implements IRecoverable. Create each class’s Recover() method to display an appropriate message. For example: The Patient’s Recover() method should display I am getting better. The Upholsterer's Recover() method should display I have new material for the couch. The FootballPlayer's Recover() method should display I picked up the ball after a fumble.
Q1: -Write a program to create a class for a Bank company. The attributes are the account name, the amount of the money, home address of the account owner All attributes are public. Create two objects only.
in C# i need to Create an application named TurningDemo that creates instances of four classes: Page, Corner, Pancake, and Leaf. Create an interface named ITurnable that contains a single method named Turn(). The classes named Page, Corner, Pancake, and Leaf implement ITurnable. Create each class’s Turn() method to display an appropriate message. For example: The Page’s Turn() method should display You turn a page in a book. The Corner’s Turn() method should display You turn corners to go around the block. The Pancake's Turn() method should display You turn a pancake when it's done on one side. The Leaf's Turn() method should display A leaf turns colors in the fall.
How do I create this class in Java? Contact Class Requirements The contact object shall have a required unique contact ID string that cannot be longer than 10 characters. The contact ID shall not be null and shall not be updatable. The contact object shall have a required firstName String field that cannot be longer than 10 characters. The firstName field shall not be null. The contact object shall have a required lastName String field that cannot be longer than 10 characters. The lastName field shall not be null. The contact object shall have a required phone String field that must be exactly 10 digits. The phone field shall not be null. The contact object shall have a required address field that must be no longer than 30 characters. The address field shall not be null.

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