How many properties (attributes) does the following class have widget weight : double color : int + Widget (): + Widget (double, int) : + getWeight0 : double + getColor () : int + setweight(double) : void + setColor (int) : void + displayInfo() : void Seloct

Q2: Create a book modelDraw a class diagram to depict a book as specified by the following statement: "A book is made up of several parts, each of which is made up of several chapters."Sections are made up of chapters." To begin, concentrate just on classes and associations.Multiplicity should be added to the class diagram you created.Improve the class diagram by adding the following features:• The book has a publisher, a publishing date, and an ISBN number.• A title and a number are included in a part; a title, a number, and an abstract are included in a chapter; and a title, a number, and an abstract are included in a section.Take a look at the refined class diagram. A title and a number characteristic are included in the Part, Chapter, and Section classes. To factor out these two traits, use inheritance.

public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken;   public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); }   public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; }   public String getBarCode() { return barCode; }   public String getLocation() { return location; }   public String getEventName() { return eventName; }   public String getEventType() { return eventType; }   public int getQuantity() { return quantity; }   public void setQuantity(int quantity) { this.quantity = quantity; }   public int getCapacity() { return capacity; }   public void setCapacity(int capacity) { this.capacity = capacity;…

PLEASE ANSWER ALL QUESTIONS ON THE NEXT PAGE:  class bookType { public:     void setBookTitle(string s);             //sets the bookTitle to  s     void setBookISBN(string ISBN);             //sets the private member bookISBN to the parameter     void setBookPrice(double cost);             //sets the private member bookPrice to cost     void setCopiesInStock(int noOfCopies);             //sets the private member copiesInStock to noOfCopies     void printInfo() const;             //prints the bookTitle, bookISBN, the bookPrice and the copiesInStock     string getBookISBN() const;             //returns the bookISBN     double getBookPrice() const;             //returns the bookPrice     int showQuantityInStock() const;             //returns the quantity in stock     void updateQuantity(int addBooks);             //adds addBooks to the quantityInStock, so that the quantity in stock now has it original                // value plus the parameter sent to this function private:     string…

public abstract class Shape {      public Shape() { }      public abstract double area() ;      public String who() { return "Shape" ; } }     public class Circle extends Shape {      private int radius ;      public Circle( int r )      {          radius = r ;      }            @Override      public double area()      {         return Math.PI * radius * radius ;      } }     public class Square extends Shape {      private int _sideLength ;      public Square( int sideLength )      {          /* TODO question 45 */      }      @Override      public double area()      {           return _sideLength * _sideLength ;      } } Implement the Square constructor, and make sure it throws an exception when the input parameter is not a valid length.  The input parameter must be positive to be considered valid.