A publishing house prints and distributes two types of publication: books and journals. Each book has a title, an author, an edition number, and an ISBN. Each journal has a title, a volume number, an issue number, and an ISBN. Each of these publication have a statement that prints their properties. Using your classes, draw a UML SEQUENCE DIAGRAM to show sequence of interaction between objects at runtime (that is, the flow of controls by method calls

A publishing house prints and distributes two types of publication: books and journals. Each book has a title, an author, an edition number, and an ISBN. Each journal has a title, a volume number, an issue number, and an ISBN. Each of these publication have a statement that prints their properties. Using your classes, draw a UML SEQUENCE DIAGRAM to show sequence of interaction between objects at runtime (that is, the flow of controls by method calls

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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An object of the class Timer is used to indicate when a certain amount of time (in seconds) has elapsed, after which it provides a “DING”. The required data field is remainingTime which is the number of seconds until the “DING”. When a Timer object is constructed, it is set with the desired number of seconds. When the timer “ticks”, it is one second closer to the “DING”. This is represented with the tick() method. The dingCheck() method indicates whether the timer should be “DINGING”. Provide the code for the constructor method, and the methods getRemainingTime(), tick(), and dingCheck(). public class Timer { // Methods // Data private int remainingTime; }
Object composition is useful for creating an Is-A relationship between classes. is it True or False ??
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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…
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Take the tax program from the last homework assignment and implement it using classes and objects instead. To do so, create a class definition for a class called Customer with attributes income and tax. It should also have a set method for income, and a calcTax() method to assign tax and return it. As a reminder, the tax is calculated as follows: Income Tax Due $0 - $50,000 5% $50,000-$100,000 $2,500 + 10% of (income > $50,000) > $100,000 $7,500 + 15% of (income > $100,000) Create a Customer object in main, have the user enter the income and assign this to the income variable of the Customer object, and then call the calcTax() method for the Customer object and print the tax due.
using python language Suppose a call center has three levels of employees—respondent, manager, and director. An incoming telephone call must first be allocated to a respondent who is free. If the respondent cannot handle the call, the call must be escalated to a manager. If the manager is occupied, then the call should be escalated to a director. Design your own classes and data structures for this problem. Implement a method dispatchCall() that assigns a call to the first available employee.
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