Refactor your design so that it is easy to add a new rule to the system. Draw the necessary sequantial diagrams and discuss your design in terms of GRASP patterns.
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Refactor your design so that it is easy to add a new rule to the system.
Draw the necessary sequantial diagrams and discuss your design in terms of GRASP patterns.
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- User: Make a class called User. Create two attributes called first_name and last_name, and then create several other attributes that are typically stored in a user profile. Makea method called describe_user() that prints a summary of the user's information. Make another method called greet_user() that prints a personalized greeting to the user.Then - Create several instances representing different users, and call both methods for each user. Admin: write a class called Admin that inherits from the User class. Add an attribute,privileges, that stores a list of strings like "can add post”, "can delete post”, "can banuser”, and so on. Write a method called show_privileges() that lists the administrator'sset of privileges. Then - Create an instance of Admin, and call your method.1 Create a class called Citizen with the following attributes/variables:a. String citizenIDb. String citizenNamec. String citizenSurnamed. String citizenCellNumbere. int registrationDayf. int registrationMonthg. int registrationYear- Create a class called Node with the following attributes/variables:a. Citizen citizenb. Node nextNode- Create a class called CitizenRegister with the following attributes/variables:a. Node headNodeb. int totalRegisteredCitizens- Add and complete the following methods in CitizenRegister:a. head()i. Returns the first citizen object in the linked listb. tail()i. Returns the last citizen object in the linked listc. size()i. Returns the totalRegisteredCitizend. isEmpty()i. Returns the boolean of whether the linked list is empty or note. addCitizenAtHead(Node newNode)i. Adds a new node object containing the citizen object informationbefore the headNodef. addCitizenAtTail(Node newNode)i. Adds a new node object containing the citizen object information atthe end…Customer This class should now implement the Comparable interface. Customer instances should be ordered by their last name, then first name, and finally the name of their associated building. toString() - Add this method that returns a String with the following format: <lastName>, <firstName> Reading This class should now implement the Comparable interface. Reading instances should be ordered by their timestamp. XmlHandler The following methods should be updated: startElement() - The handler logic should be modified such that it can now create and associate Customer, Building, Room, Device, and Reading objects. endElement() - Modify this method such that the current customer instance is added to the ArrayList of customers when a closing customer element is encountered. No hand written and fast answer please
- Create an application named TurningDemo that creates instances of four classes: Page, Corner, Pancake, and Leaf. Create an interface named ITurnable that contains a single method named Turn The classes named Page, Corner, Pancake, and Leaf implement ITurnable. Create each classs Turn() method to display an appropriate message. For example, the pages Turn() method might display You turn a page in a book.1. Which design pattern lets you define a new operation without changing the classes of the elements on which it operates? A) Visitor B) Command C) Decorator D) Chain of Responsibility 2. Which design pattern decouples the object that invokes the operation from the one that knows how to perform it? A) Command B) Strategy C) Visitor D) State 3. Which pattern to use when more than one object can handle a request and the handler is unknown? A) Chain of Responsibility B) State C) Visitor D) Command 4. The Tic-Tack-Toe is a classical Artificial Intelligence problem for which many algorithms have been proposed to solve it over the years. You were asked to provide a software component where the user can choose one algorithm at a time and try it. Which design pattern you will use? A) Strategy B) Visitor C) Chain of Responsibility D) CommandIn Form1: Create a List of Employees Define a method preloadEmployeeList with at least 2 employees of each type Define a method displayEmployeeList (name, empid, bimonthsalary,vacation accrued) to a JTable Define a method DisplayEmployeeList2. To display to a JTextArea the data returned by ToString() method.
- Computer Science Write a program to design a graphical user Interface using JavaFX without FXML and make a main class and subclasses for a project of your Interest that contains the following features add four buttons for: Add information or add service or add booking..etc Update information, update service, update booking.. etc Delete information, delete service, delete booking..etc Search information, search service, search booking..etc Add a logo at the top of the interface. You Program should follow the class Design Guidelines. Your Program should include Inheritance feature, use Interface, encapsulation. Draw a UML Diagram that represent your project. For example, Add Booking: The system will ask the user to enter the user information (Name, Phone number, Date Booked, service or anything related to your project. Once the Booking is added a message Booking confirmed with name and service, Date Booked will be displayed. The System need to check if the same Phone number…1. Create 2 interfaces: BankInterface and PetInterface. BankInterface contains only 1 abstract method: accountType() which does not return anything and takes 1 String argument: accType. PetInterface contains only 1 abstract method: petType() which does not return anything and takes 1 String argument petType. 2. Create an abstract class named Student. This class contains 2 instance variables, 1 constructor, and 2 abstract methods. a. Instance variables: stId and stName (Use must use appropriate data type.) b. A 2-argument constructor that will be called from its subclass (the concrete class) to load 2 instance variables of this level during the creation of an object in its subclass. c. 2 abstract methods: getStId and getStName.. Each of these methods, when sub classed into concrete ones, should return the respective values of the instance variables stId and stName. d. At this level you should do something to get the object state at this level. 3. Create a concrete class named…1. Create 2 interfaces: BankInterface and PetInterface. BankInterface contains only 1 abstract method: accountType() which does not return anything and takes 1 String argument: accType. PetInterface contains only 1 abstract method: petType() which does not return anything and takes 1 String argument petType. 2. Create an abstract class named Student. This class contains 2 instance variables, 1 constructor, and 2 abstract methods. a. Instance variables: stId and stName (Use must use appropriate data type.) b. A 2-argument constructor that will be called from its subclass (the concrete class) to load 2 instance variables of this level during the creation of an object in its subclass. c. 2 abstract methods: getStId and getStName.. Each of these methods, when sub classed into concrete ones, should return the respective values of the instance variables stId and stName. d. At this level you should do something to get the object state at this level. 3. Create a concrete class named…
- Create a class named Person that holds the following fields: two String objectsfor the person’s first and last name and a LocalDate object for the person’sbirthdate. Create a class named Couple that contains two Person objects. Create aclass named Wedding for a wedding planner that includes the date of the wedding,the names of the Couple being married, and a String for the location. Provideconstructors for each class that accept parameters for each field, and provide getmethods for each field. Then write a program that creates two Wedding objectsand in turn passes each to a method that displays all the details. Save the files asPerson.java, Couple.java, Wedding.java, and TestWedding.java.This is the question - Create an abstract NewspaperSubscription class with fields for the subscriber name, address, and rate. Include get and set methods for the name field and get methods for the address and subscription rate; the setAddress() method is abstract. Create two subclasses named PhysicalNewspaperSubscription and OnlineNewspaperSubscription. The parameter for the setAddress() method of the PhysicalNewspaperSubscription class must contain at least one digit; otherwise, an error message is displayed and the subscription rate is set to 0. If the address is valid, the subscription rate is assigned $15. The parameter for the setAddress() method of the OnlineNewspaperSubscription class must contain an at sign (@) or an error message is displayed. If the address is valid, the subscription rate is assigned $9. Code I was given - public class DemoSubscriptions { public static void main(String args[]) { PhysicalNewspaperSubscription pnsGood = new…Create a class SocialEvent with 3 attributes: Event title,date, for simplicity, we won’t restrict the date to a specific format andnumber of attendees..The class should contain a constructor (__init__ method), accessor and mutator methods (getters and setters), and a __str__ method.In the same file, write a main function that prompts the user to input 3 events. The function outputs the events sorted by number of attendees.