Create an object called Teacher. Declare the following variables for the object string f_name, string subject, int age and int room_no.
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
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- Create an object called Teacher. Declare the following variables for the object: string f_name, string subject, int age and introom_no.Include in the object a default constructor and a parameterized constructor. The parameterized constructor has the followingparameters (name and age).Create your main class called Teaching. The reference variable for the default constructor is T1 and for the parameterizedconstructor is T2.Pass the following values for the T1 reference to the default constructor:Create a object called Teacher. Declare the following variables for the object: string f_name, string subject, int age and int room_no. Include in the object a default constructor and a parameterised constructor. The parameterised constructor has the following parameters (name and age). Create your main class Teaching. The reference variable for the default constructor is T1 and for the parameterised constructor is T2. Pass the following values for the T1 reference to the default constructor: f_name = John subject = Science age = 35 room_no = 10 Pass the following variable using the T2 reference to the parameterised constructor: name = Smith age = 45 Program must include System.out statements to display the output.QI. Write a program in BlueJ using the following hints. 1. Create a class named Book and declare the fields author, title and pages with suitable field types. 2. Declare the constructor and initialize the fields author and title with the assigned constructor parameter. 3. Name the constructor parameter as your own. 4. Add two accessor methods to the class getAuthor, getTitle and getPages—that return the author and title fields as their respective results. Add mutator method to change the pages of the Book class. 5. Add two methods, printAuthor and printTitle, to this Book class project. These should print the author and title fields, respectively, to the terminal window.
- Please complete the following tasks: Write a class “Actor” that contains two attributes with the appropriate level of visibility explicitly defined. “Name” which is a String, Private, “NumberofAwards” which is an integer, private Write a default Constructor for this class that initializes the name to “Bob Smith” , and the number of awards to 0. Write an overload the constructor for this class that accepts actor’s name as a parameter Write accessor methods for each of the attributes. Write a method “winsAnOscar” that increases the number of awards by one and prints “The crowd applauds for <actor’s name>!” Be sure to use accessors where appropriate. Make sure your header is complete, with the appropriate level of visibility and any required keywords.Choose the best option that will make data members of a class to be 'Read-Only' 1 Mark all data fields private, provide accessors and no mutators 2 Mark all data fields private, no accessors and no mutators 3 No accessor and no mutator methods 4 Mark all data fields as private and no accessor methodsWrite the following Book class:A Book has-a title, ISBN number, author and price.o Include the following:o All instance fields (variables)o Two Constructors: a default constructor and onerequiring all fields as parameterso Methods – an accessor and mutator for each instancefieldso Create two Book objects with title, isbn, author andpriceo Print the information about the bookso Change the price of both books.o Reprint the information about the books
- Create a class called Student that has 4 instance private variables: • FirstName: of type string. • LastName: of type string. • GPA: of type double. • Year: of type integer. The class should also include the following methods: • A constructor with parameters for instances variables FirstName, LastName, GPA and year. • 4 set methods to update the instance variables. • 4 get methods to get the instance variables values.Design a public class named Rectangle to represent a rectangle following the example of the Circle class we did in Lesson #5. The Rectangle class contains:• Data fields:o private double data field width with default value 2o private double data field length with default value 3• Two constructor methods:o A no-argument constructor that creates a default rectangle with the default valueso A constructor that creates a rectangle with the specified width and length in the formal parameters• Instance methods:o A public method named getPerimeter() that returns the perimeter of the rectangle (double)o A public method named getArea() that returns the area of the rectangle (double)o Public getter methods to access the data fields, specifically:▪ getWidth()▪ getLength()o Public setter methods to set the data fields to values passed in▪ setWidth (double newWidth)▪ setLength(double newLength)INFO 1214 –Assignment 3Page 2Write a simple test program call TestRectangle like we did in class that…Create a constructor named Exam that assigns "Good luck" to a previously declared String variable named message. Create an empty overloaded constructor for the Exam class with two (2) String parameters named period and level. Declare a double-type accessor named getPrice that returns the value of price. Declare a boolean-type accessor named isFinished that returns the value of status. Declare a class named Midterm that inherits from the class named Exam. Create three (3) class declarations to show multiple levels of inheritance. Use the classes named Exam, Midterm, and Essay. Create a constructor named Midterm that prints "Exam has started." using println(). Its first statement should be a call to a constructor in the parent class. Given the base class named Quiz and the derived class named Essay, write a statement to show inheritance between these classes.
- Create the a Person class with the following:Class VariablesString firstnameString lastnameint birthmonthint birthdayint birthyearString ssnAll variables above should be private.ConstructorThe main constructor should take in all values and assign them to their respective private class variablesMethodsCreate a public getters and setters for firstname and lastname and SSNgetFirstnamegetLastnamesetFirstnamesetLastnameCreate a public getter method called getBirthdate, which will return a String composed of their birthday in month/day/year format. For example, if birthmonth=3, birthday=22, birthyear=2000, it should return the String "3/22/2000"Create a public method called verifySSN that takes in a String parameter and returns a boolean. It will check the parameter against the person's SSN and return true or false based on whether they match.1) Define a Person class containing two private attributes: last name, first name. Provide this class with a constructor allowing the initialization of its attributes and a method that displays the last name and first name of a person: void display (). 2) Define a Customer class inheriting from the Person class and having a private attribute: numidentity. Provide this class with a constructor allowing you to create a customer from their last name, first name and identity card number and a method: • void display() which displays the last name, first name and ID number of a customer. 3) Define an Owner class inheriting from the Person class and having two private attributes: name of the video club (nomclub), address of the club (adrclub). Provide this class with a constructor allowing to create a landlord from his name, his first name, the name of his video club, the address of his club and a method: • void display() who displays the name, first name, last name and address of his video…Java Question - Using the bottom code, create another class named "DigitalBook" as a subclass of the given "Book" class. Then, Make sure that the "DigitalBook" class contains two constructors: (1) one is the default constructor that takes no parameter, and (2) the other is a parameterized constructor that take 6 parameters. Be sure to use the “super” keyword in the constructors of the "DigitalBook" class. In the “main()” method of the “EX12_1” class, create four instances: “b1”, “b2”, d1”, and “d2”. Let “b1” and “b2” be the instances of the “Book” class, and let the “d1” and “d2” be the instance of the “DigitalBook” class. Be sure to use the specified constructor (as shown in attached picture) to initialize these instances. The Final Output is shown in the attached pictures. Please make sure that no errors show up in the Java Compiler when testing the code. Thank you. Add the following code to the "class Book" code (Below the ___ line). public class EX12_1{public static void…