Code outside of a class does not know how the class's objects are implemented. This is known as a. data transparency b. information hiding c. class inheritance d. class hierarchy
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- A(n) ____________ is one instance or variable of a class.Library Information System Design and Testing Library Item Class Design and TestingDesign a class that holds the Library Item Information, with item name, author, publisher. Write appropriate accessor and mutator methods. Also, write a tester program(Console and GUI Program) that creates three instances/objects of the Library Items class. Extending Library Item Class Library and Book Classes: Extend the Library Item class in (1) with a Book class with data attributes for a book’s title, author, publisher and an additional attributes as number of pages, and a Boolean data attribute indicating whether there is both hard copy as well as eBook version of the book. Demonstrate Book Class in a Tester Program (Console and GUI Program) with an object of Book class.The properties of a child class are inherited by the parent class. Select one: True False
- java If the first statement of a constructor has the form this(. . .), then the constructor calls another constructor of the same class. Select one: True FalseWhen designing a new class, the rules that dictate how the instance variables are used are called the O invariants specifications O attributes O abstractionsObject Oriented Programming in JAVA You are part of a team writing classes for the different game objects in a video game. You need to write classes for the two human objects warrior and politician. A warrior has the attributes name (of type String) and speed (of type int). Speed is a measure of how fast the warrior can run and fight. A politician has the attributes name (of type String) and diplomacy (of type int). Diplomacy is the ability to outwit an adversary without using force. From this description identify a superclass as well as two subclasses. Each of these three classes need to have a default constructor, a constructor with parameters for all the instance variables in that class (as well as any instance variables inherited from a superclass) accessor (get) and mutator (set) methods for all instance variables and a toString method. The toString method needs to return a string representation of the object. Also write a main method for each class in which that class is…
- Class Exercise # 1 Create a class hierarchy with base class as Student and derived classes are Part-Time and Full-Time Full-time students will have an extra field to hold two Exam scores Use suitable data structure to hold 15 quizzes scores for each student (part-time or full-time) Create a class Session Use data structure to hold 20 students in a Session, some are part-time, some are full-time Create public methods to calculate average quiz scores per student for the whole class Create public method to print the list of quiz scores in ascending order for one session Create public method to print names of part-time students Create public method to print exam scores of full-time students Main Program Create an instance of Session, populate it with 20 students and dummy scores Call all public methods of Session and capture the output of those methods on consoleI need help with this PLEASE NO JAVA NO C++ ONLY PYTHON PLZ Create a class object with the following attributes and actions: Class Name Class number Classroom Semester Level Subject Actions: Store a class list Print the class list as follows: Class name Class Number Semester Level Subject Test your object: Ask the user for all the information and to enter at least 3 classes test using all the actions of the object print using the to string action Describe the numbers and text you print. Do not just print numbers or strings to the screen explain what each number represents.Static members of a class are what they sound like. When and how do they come in handy?
- class Widget: """A class representing a simple Widget === Instance Attributes (the attributes of this class and their types) === name: the name of this Widget (str) cost: the cost of this Widget (int); cost >= 0 === Sample Usage (to help you understand how this class would be used) === >>> my_widget = Widget('Puzzle', 15) >>> my_widget.name 'Puzzle' >>> my_widget.cost 15 >>> my_widget.is_cheap() False >>> your_widget = Widget("Rubik's Cube", 6) >>> your_widget.name "Rubik's Cube" >>> your_widget.cost 6 >>> your_widget.is_cheap() True """ # Add your methods here if __name__ == '__main__': import doctest # Uncomment the line below if you prefer to test your examples with doctest # doctest.testmod()Create a Class Diagram and write pseudocode define each method in the class module for one of the following: 1. Submarine 2. Volcano 3. Planet You must also write pseudocode to show how objects of your <class> can be created, including the methods of the class that can be called to perform their respective tasks.Focus on classes, objects, methods and good programming style Your task is to create a BankAccount class. Class name BankAccount Attributes _balance float _pin integer Methods init () get_pin() check pin () deposit () withdraw () get_balance () The bank account will be protected by a 4-digit pin number (i.e. between 1000 and 9999). The pin should be generated randomly when the account object is created. The initial balance should be 0. get_pin () should return the pin. check_pin (pin) should check the argument against the saved pin and return True if it matches, False if it does not. deposit (amount) should receive the amount as the argument, add the amount to the account and return the new balance. withraw (amount) should check if the amount can be withdrawn (not more than is in the account), If so, remove the argument amount from the account and return the new balance if the transaction was successful. Return False if it was not. get_balance () should return the current balance.…
