Composition means O a. that data fields should be declared private b. that a class extends another class O c. that a variable of supertype refers to a subtype object O d. that a class contains a data field that references another object
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- All of the following are true about a class EXCEPT: Oa function associated with a class is referred to as a subroutine. Oa class created in one source code file can be used in another source code file. Oa class is a blueprint for creating objects. Oa class can contains data, and methods to manipulate the data.Python Programming1.Write a class named Car that has the following data attributes:(a.) __year_model (for the car’s year model)__make (for the make of the car)__speed (for the car’s current speed)The Car class should have an __init__ method that accepts the car’s year model and make as arguments. These values should be assigned to the object’s __year_model and __make data attributes. It should also assign 0 to the __speed data attribute.The class should also have the following methods:(b). Accelerate: The accelerate method should add 5 to the speed data attribute each time it is called.Brake: The brake method should subtract 5 from the speed data attribute each time it is called.get_speed: The get_speed method should return the current speedC# Program Create a class called Employee Requirements:1. Use inheritance2. Use the constructor function to initialize employee information: name, email and mobile number3. Instantiate two employee objects with different information4. Display all properties of both objects
- 1. Part 1: A point in the x-y plane is represented by its x-coordinate and y-coordinate. Design the class Point that can store and process a point in the x-y plane. Your class should contains the following methods. Default constructor without parameters that initializes the private data member to the suitable values Constructor with parameters sets the values of the instance variables to the values of the parameter. Accessor methods that return the values of the x-axis and y-axis. setPoint method which set the values of x-axis and y-axis makeCopy method that make a copy of a received object of type Point. getCopy method that returns a copy of the current object toString method that returns the object string isEqual that returns true if the current object is equal to the received object of type point distance, which receives two objects of type Point and returns the distance1. IntroductionCCCS 121Object Oriented Programming language Group Course ProjectAn object-based application is an application that involves objects created out of classes. These objects interact with each other to fulfill certain functionalities.The focus of this project is to develop an application written in java which involves the use of object-oriented programming. This project is a group project. As a student you will be given a chance to come up with an idea for your project. However, the project must satisfy the requirements given in this document.This document shall be used as a set of guidelines. You are allowed to make necessary additions and/or changes to the requirements with prior approval from your instructor.2. RequirementsPropose and implement an application, that contributes to solving a real-life problem. Your application should include at least the following:2.1 Classes3 to 4 classes each one of them should have:A. B. C.A number of private and public attributes. The…For each class create these features: A private variable that can only be accessed by that class. A protected variable that can only be accessed by that class or children of that class. Getter and Setter functions for accessing the private data of the class. A Constructor that outputs the name of the class whenever it is used to instantiate or construct a class object. Example: "Class A object constructed." Comments that describe exactly how the class is structured and what are it's features (superclass, subclass, overloading, etc). Add any variables or functions you deem necessary, but be sure to describe how they work using comments and the couts as required below. These are the classes: Multi-level Classes consisting of 3 classes (A, B, and C, with A as top superclass). In class A, add a set of public overloading functions for printing out different data types. Example: print(int param), print(double param), and print(string param) Use polymorphism for one…
- The main advantage of the encapsulation is that, it provides abstraction between an object and its clients. Select one: O True OFalse Encapsulation is the process of grouping the attributes and method of an object together in a single data structure known as a class Select one: O True O False A constructor is a member variable that is called automatically when an object is created. Select one: O True O False We cannot declare more than one constructor per class. Select one: O True O False onQ3: Class called ( myclass) and an objects of this class called (obj1) and (obj2). This class contains two data members of type integer (a and b) with private access, and three member functions with public access: constructor to give valne to variables, and default constructor and show0 to display variables. Write a program to set and display the objects fields.Describe the different types of members that make up a class.
- C++ Create a class using only 1 file For each class create these features: A private variable that can only be accessed by that class. A protected variable that can only be accessed by that class or children of that class. Getter and Setter functions for accessing the private data of the class. A Constructor that outputs the name of the class whenever it is used to instantiate or construct a class object. Comments that describe exactly how the class is structured and what are it's features (superclass, subclass, overloading, etc). Add any variables or functions you deem necessary, but be sure to describe how they work using comments and the couts as required below These are the classes: Multi-level Classes consisting of 3 classes (A, B, and C, with A as top superclass). In class A, add a set of public overloading functions for printing out different data types. Example: print(int param), print(double param), and print(string param Multiple Classes consisting of 2 new…Define a class Shape and create constant object from the class with at least one constant data member. Create object in main function from the class Shape. Also display state of the constant object in main( ) functionSome of the characteristics of a book are the title, author(s), publisher, ISBN, price, and year of publication. Design a class bookType that defines the book as an ADT. Each object of the class bookType can hold the following information about a book: title, up to four authors, publisher, ISBN, price, and number of copies in stock. To keep track of the number of authors, add another member variable. Include the member functions to perform the various operations on objects of type bookType. For example, the usual operations that can be performed on the title are to show the title, set the title, and check whether a title is the same as the actual title of the book. Similarly, the typical operations that can be performed on the number of copies in stock are to show the number of copies in stock, set the number of copies in stock, update the number of copies in stock, and return the number of copies in stock. Add similar operations for the publisher, ISBN, book price, and authors. Add the appropriate constructors and a destructor (if one is needed). Write the definitions of the member functions of the class bookType. Write a program that uses the class bookType and tests various operations on the objects of the class bookType. Declare an array of 100 components of type bookType. Some of the operations that you should perform are to search for a book by its title, search by ISBN, and update the number of copies of a book.
