Consider an online holiday booking system. The users can register to book a holiday package. Currently, the design model includes the classes: User and Package. Which of the following Gang of Four (GoF) design patterns is associated with the creation of Package objects? Select one: O a. Adapter pattern O b. Decorator pattern O c. Factory method pattern O d. Proxy pattern

Consider an online holiday booking system. The users can register to book a holiday package. Currently, the design model includes the classes: User and Package. Which of the following Gang of Four (GoF) design patterns is associated with the creation of Package objects? Select one: O a. Adapter pattern O b. Decorator pattern O c. Factory method pattern O d. Proxy pattern

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 20RQ

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Create the following class diagram: The print method in: - Author prints the Authors data - Page prints page no and text - Textbook prints the subject and all pages - Novel prints the genre and all pages The toString method in: - Book returns title and authors - textbook returns subject in additions to super toString - Novel genre in additions to super toString Test your implementation create objects of different types example : - Create a book of type Novel which has many pages and several authors - Create a book of type Textbook which has many pages and several authors - Access these objects polymorphically, variable of class book contains objects of its subclasses Textbook and novel - Print a hall book - Print a single page of a book - Print the book and its authors
Climber is a class that has been defined, and the variable cat refers to a Climber instance. With an argument of 4, call the method stairs on the instance referred to by cat.This is a python script.
Finish the TestPlane class that contains a main method that instantiates at least two Planes. Add instructions to instantiate your favorite plane and invoke each of the methods with a variety of parameter values to test each option within each method. To be able to test the functionality of each phase, you will add instructions to the main method in each phase.
Coupling is the amount two methods or classes know about one another. The more they know about one another, the more tightly coupled the design. True/False
A group or collection of objects with common properties is called: a. Class b. Interface c. Method d. Attributes
Consider an online holiday booking system. The users can register to book a holiday package, either as a family holiday or for adults only. The software designer would like to apply the Gang of Four (GoF) factory method pattern to the system design. Which of the following should be implemented for the pattern? Select one: O a. The Package class should implement the Family Package and Adult Only_Package classes. O b. The Package class should implement the Factory class. O C. The Factory class should implement the Package class. O d. The Family Package and Adult Only_Package classes should implement the Package class.
Object Oriented Programming: 213COMP, 214COMP (Feb-2022) Assignment- I [10 marks] Academic honesty: O Only pdf file accepted & student ID, will be your upload file. O Student who submit copied work will obtain a mark of zero. O Late work or attach file by email message not allowed. Q1: Write the signature for a method that has one parameter of type String, and does not return a value. Q2: Write the signature for a method that has two parameters, both of type Student, and returns an int value. Q3: Write the constructor's headers of the followings? new Student (202101156, “Ahmed"); new Address(51, "jazan university","CS&IT" ); new Grade(true, 505235600, 4.5); Q4: a) Write a class Student that define the following information: name, stid , age. b) Explain a mutators (setters) and accessors(getters) methods for each attributes(fields). c) Add three constructors: • with empty constructor. one parameter constructor (name of student) two parameters constructor (name and stid) d) Create two…
Consider an online holiday booking system. The users can register and log in to book a holiday package. Currently, the design of the system has the classes: User, Booking and Package. The packages that are accessible to users include ski holiday and cruise holiday packages. Which of the following is the most appropriate when applying the Gang of Four (GoF) factory method pattern? Select one: a. The Package_Factory class should have an association with the Package and Booking class. b. The Package_Factory class should have an association with the User and Package class. c. The Package_Factory class should have an association with the User and Booking class. d. The Package_Factory class should have an association with the User, Booking and Package classes.
Given a variable Animal pet - which currently holds a reference to a Animal object, and two methods inside the Animal class with the headers: 1. public void setOwner(String ownerName, String address, boolean hasGarden) 2. public int getPetToHumanAge(String species, int petAge)
Write code for an Invoice class for a car sale. Printing an object of the Invoice should print thedetails about the seller, the buyer, the dealer, the date of transaction, the car being sold, the purchase andselling price, the commission earned by the dealer, sales tax, and the total price of the car (calculated giventhe details in Question 3 part 3). A generation of the invoice object should set the isSold variable of the car class to true. You do not need to write code for any other classes import java.io.File;import java.io.FileWriter;import java.io.IOException; abstract class Car { // class car String[] name; int reg_number, eng_number, chassis_num, status; String[] city, model, color, date_reg, date_arr, type; float price; abstract float calculate(float price);} class Dealer extends Car { // inherits from Car String[] deal_name, deal_id, deal_add, deal_pno; float dealer_com; float calculate(float price) { dealer_com = (float) (0.01 * price + 0.01 * price); // adding extra 2%…
Write code for an Invoice class for a car sale. Printing an object of the Invoice should print thedetails about the seller, the buyer, the dealer, the date of transaction, the car being sold, the purchase andselling price, the commission earned by the dealer, sales tax, and the total price of the car (calculated giventhe details in Question 3 part 3). A generation of the invoice object should set the isSold variable of the carclass to true. You do not need to write code for any other classesQuestion 3 part 3 is given Below[Question 3:1. Explain the importance of method signature in method overriding. 2. The system might want to use an overridden method (function) with a common signature across the relevant classes Seller, Dealer, Buyer, and distinct classes Car and Invoice for maintaining the finances. Details of the classes can be seen in Table 1. Explain with proper syntax as to how this can be achieved using object-oriented programming.3. Write Java code (for the methods only) that…
Modify the student class presented in this chapter as follows. Each student object should also contain the scores for three tests. Provide a constructor that sets all instance values based on parameter values. Overload the constructor such that each test score is assumed to be initially zero. Provide a method called setTestScore that accepts two parameters: the test number (1 through 3) and the score. Also provide a method called getTestScore that accepts the test number and returns the appropriate score Provide a method called average that computes and returns the average test score for this student. Modify the toString method such that the test scores and average are included in the description of the student. Modify the driver class main method to exercise the new Student methods. (Java)