1.5 refers to the hiding of the internal details of an object from the user. a. Protected b. Encapsulation С. Polymorphism d. Constructor Abstraction
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- Every JavaScript object has a constructor function that acts as a template for all the properties and methods associated with the object’s class, and a prototype, which can be thought of as a machine to instantiate objects. Select one: True FalseJava Program Create student class with attributes(states) and methods (behaviors) as shown in the image. Create three objects with constructors. Send three parameters in constructor while creating objects. Create total three objects with two similar objects (same attributes (name, age and color)). Add equals method to student class to compare objects. Compare two similar objects with equals method and print the result of it in main program.Is there a different way of doing this problem? Question: Create a class AccessPoint with the following attributes: x - a double representing the x coordinate y - a double representing the y coordinate range - an integer representing the coverage radius status - On or Off Add constructors. The default constructor should create an access point object at position (0.0, 0.0), coverage radius 0, and Off. Add accessor and mutator functions: getX, getY, getRange, getStatus, setX, setY, setRange and setStatus. Also, add a set function that sets the location coordinates and the range. Add the following member functions: move and coverageArea. Add a function overlap that checks if two access points overlap their coverage and returns true if they overlap. Add a function signalStrength that returns the wireless signal strength as a percentage. The signal strength decreases as one moves away from the access point location. Test your class by writing a main function that creates five access…
- The xxx_Pet classA Pet has a:– Name• Include an instance variable• Getters and setters for an instance variable• A toString method which returns a String containing the pet name Abstract methods: speak() and move()The subclassesWrite a dog, cat, snake subclasses with proper instant variables and methodsWrite a class xxx_TestPet which will1- Create a dog, a snake, and a cat objectsSample OutputPet Fido is a dog, weighing 45 poundsFido says woofrun Fido runPet Sam is a snake, 30 inches longSam says hissslither Sam slitherPet Hershey is a cat, with Long hairHershey says Meowprance Hershey prance2- Print just the weight of the Dog, the length of the Snake and the hair length of theCat as shown belowFido weighs 45 poundsSam has length 30 inchesHershey has Long hair 3- Store the objects in an Array of Pet objects and print the information belowPet D1 is a dog, weighing 55 poundswoofrunPet S1 is a snake, 30 inches longhissslitherPet C1 is a cat, with Long hairmeowprancePet D2 is a dog,…Consider an online holiday booking system. The users can register to book a holiday package. Currently, the design model includes the classes: User, Package and Family_Package. Which of the following is correct about a Package object in the object-oriented software design? Select one: a. A Package object’s attributes should always be made public and directly accessible. b. A Package object is one instance of its class. c. A Family_Package object contains a set of methods only. d. A Package object contains a set of attributes only.PS: Please say the logic behind it. Thank you! 1. Create a java class Vehicle.a. The class should have two fields:i. no_of_seats and no_of_wheels.b. Create two objectsi. Motorcycle and Car for this class.c. Your output should show the descriptions for Car and Motorcycle
- Design a class named Author with the following members: A field for the author’s name (a String) A field for the author’s year of birth (an int) One or more constructors and appropriate accessor and mutator methods A toString method that displays the author’s info as: Author: Mary Shelley (1797) Save the file as Author.java. Next, create an abstract class named Book with the following members: A field for the book title (a String) A field for the book author (a reference to an Author object) A field for the book price (a double) A constructor that requires the title and author Get methods for the title, author, and price An abstract method named setPrice A toString method that displays the book’s title, author’s info, and price as: Frankenstein Author: Mary Shelley (1797) Price: $23.95 Save the file as Book.java. Create Fiction and NonFiction child classes of Book. Each must include a setPrice method that sets the price for all Fiction books to $23.95 and for all NonFiction books…A. Which statement about object-oriented programming in JavaScript is correct? a. JavaScript programs may contain just two kinds of objects: native and host. b. Object-oriented programming refers to the creation of reusable, anonymous functions. c. The code and data within an object cannot be read or modified directly by other programs. d. The encapsulation provided by objects increases complexity but also increases speed. B. Suppose you have written JavaScript constructors for two object classes calledClassAandClassBand then the statementClassA.prototype = new ClassB();.ClassBcan use the value returned by one ofClassA’s methods in one of its own methods becauseClassBinherits all the properties and methods ofClassAin this situation. Select one: True FalseAssume the existence of a Window class with a constructor that accepts two integer parameters containing the width and height of the window (in that order). Assume a subclass TitledWindow has been defined that has two instance variables: a string named text for the text of the title and, an integer, titleBarHeight for the height of the title bar. Write a constructor for TitledWindow that accepts four parameters: two integers containing the width and height (which are passed up to the Window constructor), and, a string and integer which are used to initialize the TitledWindow instance variables. The height of the title bar should be 'clamped' by the constructor to one half the height of the window-- i.e., if the height of the title bar passed into the constructor is greater than one half the specified height of the window, it should be set to one half the height of the window.
- Question 3 Draw in a Word file (or paste a handwritten image picture) the solution to the following problem.1. Create an object diagram (showing qualities of attributes and methods) for the classesyou designed for the book circulation software system in the Cook’s Library. Please do not use previous any answers to answer this one as they are wrong it needs to be an OBJECT diagram.Thanks Full explain this question and text typing work only thanksAns8 izt--7 Write 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.Step 2: Identify three different classes that might contain each of these objects: myBlueDenimShirt presidentOfTheUnitedStates myPetCat myCousinJimbo This is about programming and understanding the difference about objects and class. Thanks