(PYTHON) (The Rectangle class) Following the example of the Circle class in Section 7.2, design a class named Rectangle to represent a rectangle. The class contains: Two data fields named width and height. A constructor that creates a rectangle with the specified width and height. The default values are 1 and 2 for the width and height, respectively. A method named getArea() that returns the area of this rectangle. A method named getPerimeter() that returns the perimeter. Draw the UML diagram for the class, and then implement the class. Write a test program that creates two Rectangle objects—one with width 4 and height 40 and the other with width 3.5 and height 35.7. Display the width, height, area, and perimeter of each rectangle in this order.

Write a simple cash register class. (Use Java) Each cash register should keep track of the number of items checked out and the total cash in the register. We are only concerned with the number of items to check out and their prices. No need to handle item names, SKUs, taxes, etc... It should have the following methods (use static when appropriate): checkout( ) Takes two forms. If there is only one parameter that is the cash received and there is only one item checked out. If it has two parameters, the first parameter should have the number of items checked out and the second parameter is the price per item. cashout( ) Reset the number of items and total cash to zero for a cash register getItems( ) Returns the number of items in the cash register getTotalCash( ) Returns the total cash in the cash register getAveragePricePerItem( ) Returns the average price per item checked out by the cash register getRegisterCount( ) Returns the number of cash registers created getAllItems(…

(IllegalArgumentException)Programming  defined the Triangle class with three sides. In the a triangle the sum of any two sides is greater then than the other side. Create IllegaTriangleException class, and modify the constructor of Triangle classto throw an IllegaTriangleException object if a triangle is created with sides that violate the rule, as follows: /** Construct a tringle the specified sides*/ public Triangle(double side1, double side2, double side3) throws IllegaTriangleException{ //Implement

!! E! 4 2 You are in process of writing a class definition for the class Book. It has three data attributes: book title, book author, and book publisher. The data attributes should be private. In Python, write an initializer method that will be part of your class definition. The attributes will be initialized with parameters that are passed to the method from the main program. Note: You do not need to write the entire class definition, only the initializer method lili lilı