BookAuthor-name: String-author:Author-price: doublehas -name: String-qty:int = 0-email: String-gender: char+Book (name: String, author: Author,price: double, qty:int)+Book (name: String,price: double, qty:int)+getName(): String+getAuthor(): Author+getPrice(): double+setPrice (price: double):void+getQty(): int+setQty (qty: int):void+toString(): String."Book [name=?, Author [name=?, email=?, gender=?], price=?,qty=?]"You need to reuse Author's toString().1.3 Create a subclass called BookMulti Authors it should be designed as shown inthe class diagram the class should be inherited from the superclass Book. Itcontains:1. The constructors take an array of Author2. The toString() method shall return"Book[name=?,authors={Author[name=?,email-?,gender-?],......},price=?,qty=?]"BookMultiAuthorsAuthor-authors: Author []-name: String-email:String-gender: char+ BookMultiAuthors (name: String, price:double, qty:int, authers: Author [])+getAuthors (): Author []+toString(): String"Book [name=n, authors={Author [name=n,email=e, gender=g],...), price=p,qty=q]" Part1 [5 Degrees](Classes):1.1 Create a class called Author, it should be designed as shown in the classdiagram to model a book's author. It contains:1. Three private instance variables: name (String), email (String), and gender (char of either'm' or 'f');2. One constructor to initialize the name, email and gender3. public getters/setters: getName(), getEmail(), setEmail(), and getGender();4. A toString() method that returns "Author[name=?,email=?,gender=?]"AuthorNo default values for the variables-name: String- email: String-gender:charchar of 'm' or 'f'+Author (name: String,email: String, gender: char)+getName(): String+getEmail(): String+setEmail(email:String):void+getGender(): char+toString(): String."Author [name=?, email=?, gender=?]"1.2 Create a class called Book it should be designed as shown in the class diagramto model a book written by one author. It contains:1. Four private instance variables: name (String), author (of the class Author you havecreated) price (double), and qty (int);2. Two constructors3. public methods getName(), getAuthor(), getPrice(), setPrice(), getQty(), setQty().4. A toString() that returnsYou should reuse"Book[name=?,Author[name=?,email=?,gender=?],price=?,qty=?".Author's toString().

UML stands for Unified Model Language.UML tool is used to design the class diagrams. The name of the…

Book 1 Author -name: String -author:Author -price:double -name: String -email: String -gender: char -qty:int = 0 +Book (name: String, author:Author, price: double, qty:int) +Book (name: String, price: double, qty:int) +getName(): String +getAuthor(): Author +getPrice(): double +setPrice (price: double):void +getQty(): int +setQty (qty: int) : void +toString(): String. "Book [name=?, Author [name=?, email=?, gender=?], price=?, qty=?]" You need to reuse Author's toString(). 1.3 Create a subclass called BookMultiAuthors it should be designed as shown in the class diagram the class should be inherited from the superclass Book. It contains: 1. The constructors take an array of Author 2. The toString() method shall return "Book[name=?,authors={Author[name=?,email-?,gender-?].......price=?,qty=?]" BookMultiAuthors Author -authors: Author[] -name: String -email:String -gender:char +BookMultiAuthors (name: String,price :double, qty:int, authers: Author []) +getAuthors (): Author [] +toString(): String "Book [name=n, authors= (Author [name=n, email=e, gender-g],...),price=p, qty-q]" has

Book 1 Author -name: String -author:Author -price:double -name: String -email: String -gender: char -qty:int = 0 +Book (name: String, author:Author, price: double, qty:int) +Book (name: String, price: double, qty:int) +getName(): String +getAuthor(): Author +getPrice(): double +setPrice (price: double):void +getQty(): int +setQty (qty: int) : void +toString(): String. "Book [name=?, Author [name=?, email=?, gender=?], price=?, qty=?]" You need to reuse Author's toString(). 1.3 Create a subclass called BookMultiAuthors it should be designed as shown in the class diagram the class should be inherited from the superclass Book. It contains: 1. The constructors take an array of Author 2. The toString() method shall return "Book[name=?,authors={Author[name=?,email-?,gender-?].......price=?,qty=?]" BookMultiAuthors Author -authors: Author[] -name: String -email:String -gender:char +BookMultiAuthors (name: String,price :double, qty:int, authers: Author []) +getAuthors (): Author [] +toString(): String "Book [name=n, authors= (Author [name=n, email=e, gender-g],...),price=p, qty-q]" has

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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private OnlineStudent readOnlineStudent(Scanner pIn) { String id = pIn.next(); String lname = pIn.next(); String fname = pIn.next(); OnlineStudent student = new OnlineStudent(id, fname, lname); String fee = pIn.next(); int credits = pIn.nextInt(); if (fee.equals("T")) { student.setTechFee(true); else { student.setTechFee(false); } student.setCredits(credits); return student; keep getting class, interface,enum or record expected. I need help
python class Student:def __init__(self, first, last, gpa):self.first = first # first nameself.last = last # last nameself.gpa = gpa # grade point average def get_gpa(self):return self.gpa def get_last(self):return self.last def to_string(self):return self.first + ' ' + self.last + ' (GPA: ' + str(self.gpa) + ')' class Course:def __init__(self):self.roster = [] # list of Student objects def drop_student(self, student):# Type your code here def add_student(self, student):self.roster.append(student) def count_students(self):return len(self.roster) if __name__ == "__main__":course = Course() course.add_student(Student('Henry', 'Nguyen', 3.5))course.add_student(Student('Brenda', 'Stern', 2.0))course.add_student(Student('Lynda', 'Robinson', 3.2))course.add_student(Student('Sonya', 'King', 3.9)) print('Course size:', course.count_students(),'students')course.drop_student('Stern')print('Course size after drop:', course.count_students(),'students')
Create a class called Staff that has the following attributes: Staff String - FirstName String - LastName String - Department String - Title Integer - UIN Staff() Staff(FirstName, LastName, Department, Title, UIN) getFirstName() - String setFirstName(String) - void getLastName() - String setLastName(String) - void getDepartment() - String setDepartment(String) - void getTitle() - String setTitle(String) - void getUIN() - Integer setUIN(Integer) - void toString() - String compareTo(Staff) - Integer equals(Staff) - Boolean PreviousNext
Q2: Implement function F (A, B, C) = m (2,4,6,7) using 1:4 Multiplexer F (A, B).
Charge Account ValidationCreate a class with a method that accepts a charge account number as its argument. The method should determine whether the number is valid by comparing it to the following list of valid charge account numbers:5658845 4520125 7895122 8777541 8451277 13028508080152 4562555 5552012 5050552 7825877 12502551005231 6545231 3852085 7576651 7881200 4581002These numbers should be stored in an array. Use a sequential search to locate the number passed as an argument. If the number is in the array, the method should return true, indicating the number is valid. If the number is not in the array, the method should return false, indicating the number is invalid.Write a program that tests the class by asking the user to enter a charge account number. The program should display a message indicating whether the number is valid or invalid.
Ticket d:int price int startTime ind endTime int departure String destination: String nrofstops int availableantity.int +Ticket) Tickettid int, price int,startTimeint, endTime int,dep String, dest String, nrOfStops.int, availableduantity.int) +tastringl) String tcale(int PlaneTicket TrainTicket nrOfluggage int changeTicket boolean Plane Ticket) PlaneTickettidint, price int startTimeint endTime int dep:String, dest String nrOfstopsint, availableGuantityint, nrOftuggage int, waitingTime: int) +toštringt String addluggageToPrice) int +calci)int cabinNrint soldTickets int +TrainTicket() +TrainTicketlid:int, price int,starttimeint, endTime int,dep String dest String, nrOfStops:int, availableQuantity:int, cabinterint soldTickets int) +tostringl) String +calc().int Create abstract class Ticket, and classes TrainTicket and Plane Ticket. Define all attributes and implement all necessary getters and setters for Ticket, TrainTicket and PlaneTicket. • Implement the methods in class Ticket with the…
N-SIDED REGULAR POLYGON) In an n-sided regular polygon, all sides have the same length and all angles have the same degree (i.e., the polygon is both equilateral and equiangular). Design a class named RegularPolygon that contains: ▪ A private int data field named n that defines the number of sides in the polygon with default value 3. ▪ A private double data field named side that stores the length of the side with default value 1. A private double data field named x that defines the x-coordinate of the polygon's center with default value 0. ▪ A private double data field named y that defines the y-coordinate of the polygon's center with default value 0. A no-arg constructor that creates a regular polygon with default values. A constructor that creates a regular polygon with the specified number of sides and length of side, centered at (0, 0). A constructor that creates a regular polygon with the specified number of sides, length of side, and x- and y-coordinates. ▪ The accessor and…
private LocalDate date private Doctor doctor, private boolean status private String appointmentNumber. What to do 1. (5) Provide the following: • A fully parameterized constructor. Setter and getter for all attributes. 2. (5) Add a toString method. It should return a String similar to the following (Note: you should only add the doctor's name): Expected Output: Date: 2022-04-01 Doctor Name: Dr. Ahmed
I want help with theses classes relationship please
Here is a statement: class temporary { public: void set(string, double, double); void print(); double manipulate(); void get(string&, double&, double&); void setDescription(string); void setFirst(double); void setSecond(double); string getDescription() const; double getFirst()const; double getSecond()const; temporary(string = "", double = 0.0, double = 0.0); private: string description; double first; double second; }; How can I write a definition of the member function manipulate that returns a decimal number as follows: If the value of description is "rectangle", it returns first * second; if the value of description is "circle", it returns the area of the circle with radius first; if the value of description is "sphere", it returns the volume of the sphere with radius first; if the value of description is "cylinder", it returns the volume of the cylinder with radius first and height second; otherwise, it returns the value -1.