create a class Person to represent a person and another one to represent the database. A dictionary should be a data member of the database class, with Person objects as search keys for this dictionary. Write a program that tests and demonstrates your database.
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create a class Person to represent a person and another one to represent the
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- Background Often, data are stored in a very compact but not human-friendly way. Think of how dishes in a menu can be stored in a restaurant database somewhere in the cloud. One way a dish object can be stored is this: { "name": "Margherita", "calories": 800, "price": 18.90, "is_vegetarian": "yes", "spicy_level": 2 } Obviously, this format is not user-readable, so the restaurant's frontend team produced many lines of code to render and display this content in a way that's more understandable to us, the restaurant users. We have a mini-version of the same task coming up. Given a list of similar complex objects (represented by Python dictionaries), display them in a user-friendly way that we'll define in these instructions. What is a "dish"? In this project, one dish item is a dictionary object that is guaranteed to have the following keys: "name": a string that stores the dish's name. "calories": an integer representing the calorie intake for one serving of the dish. "price": a float to…Project in Java programming language : Choose an enterprise and do a business description of it. 1-2 pages. Create all classes for entities. All classes must have at least a constructor, get and set methods for all private variables and a toString method. Create classes also for connection entities (e.g. orders, reservations, etc.) All information should be saved in files. When opening the program, all information from files must be loaded in array lists. Use an array list for every class. The program must have at least one menu where the user can choose the operations to work. You should at least have one class that inherits from another class. You should have at least one interface that is extended by at least 2 classes. You must use the interface methods in your program. You are allowed to use the GUI for this project. If not use JOptionPane You are allowed to use databases, instead of files.To separate the implementation's functionality from the kind of data it uses, the programmer creates a class. Functions and classes can handle any data type because of this. headers in a file a method that is not real As a generic class, a design template is
- 4. class definition for Friend For the next version of the friends database (coming soon!), we want to use classes rather than dictionaries. Define a Friend class , where each Friend object will store that friend's name, height and favorite foods. The class should have an init method that takes in that friend's name and height. It should have an add favorite_food method that takes a string and adds that string to a set of favorite foods, and a number_of_favorite_foods method that returns the number of favorite foods for that friend. Sample runs should look like: >>> friend1 = Friend ("dweezil", 175) >>> friend1. add favorite food("borscht") >>> friend1.add favorite food("borscht") >>> friend1. add favorite food("bagel") >>> friend1.add_favorite food("banana") >>> friend1.number_of_favorite_foods () 3. >>> friend1.name 'dweezil' >>> friend1.height 175What purpose does a copy constructor serve? Under what circumstances is it required?is a construct that defines objects of the same type. A class An object A method A data field
- Scenario: A company likes to have a simple system to keep track of all the employees. You must create an object-oriented solution. It must be a menu-driven program for the user to use the system through the console. The following classes are needed for this object-oriented database. 1) Create a class called Employee that has the following stored properties: Employee empID: Integer (Auto Generated) empFirstName: String empLastName: String empAnnualSalary : Integer empResidence: Residence ** Class Employee should have set/get properties, constructor and have following methods: toString() method that returns the above information as a String 2) Create a class called Residence which can be aggregated into the class Employee Residence streetName: String cityName: String zipCode: String province: String country: String ** Class Residence should have set/get properties, constructor and following method: toString() method that returns the above information as a String. System Menu: Summary of…In order to avoid the complications that arise when combining non-object values with object-related values, you should go through the usage of wrapper classes for non-object data types.# Create Student class with attributes name,department,year and GPA # Student class has also static departments list with elements ["SENG","CENG","IE","EEE","EE"] # Class also has id attribute(STRING)starts from 20400007000 that increments automatically. # Define str method of Student to print all attribute information # Program should not create Student object if department is not in departments and GPA is not between 0.00 , 4.00 # Use the given code to handle test and handle errors # Hint: Define a Method to validate the attribute values before creating objectS. while True: create = bool(int(input("1.Input 0.Exit: "))) if not create: break else: name = input("Enter name of student: ") department = input("Enter department of Student: ") year = input("Enter year of student: ") GPA = int(input("Enter GPA of Student: ")) s = Student(name, department, year, GPA) print(s) SAMPLE OUTPUTS 1.Input 0.Exit: 1 Enter name of student: Ali Kaçar Enter department of Student: IE Enter year of…
- What are dangling references? How are they created, and why are they a problem?In JSON, anything that is surrounded by curly braces { } is considered Select one: a. Attribute b. Array c. Value d. ObjectIf you have a class named Animal, give three examples of names of data fields (or attributes) you might expect this class to have.