please may you : create a Python class named Animal with properties for name, age, and a method called speak. also include an initializer method for the class and demonstrate how to create an instance of this class. and extend the Animal class by adding a decorator for one of its properties (e.g., age). please include both a getter and a setter for the property, and demonstrate error handling.

BACKGROUND GDOT has contacted you to help write code in C++ to control the railroad signals (barriers with flashing lights and sounds across railroad tracks) in Georgia. You must create a Railroad Signal class with three hidden attributes (Up, Down and Signal), two constructors (a default that sets Up to on, Down and signal to off, and an overloaded that sets all Up to off, Down and Signal to on) and a method that changes the position and activates or deactivates the Signal. Here is the algorithm for the given C++ code: #include <iostream> using namespace std; class RailroadSignal {private: bool Up; bool Down; bool Signal; public: // Default constructor that sets Up to on, Down and Signal to off RailroadSignal() : Up(true), Down(false), Signal(false) {} // Overloaded constructor that sets all Up to off, Down and Signal to on RailroadSignal(bool up, bool down, bool signal) : Up(up), Down(down), Signal(signal) {} // Method to change the position and...

Create a Point class to hold x and y values for a point. Create methods show(), add() and subtract() to display the Point x and y values, and add and subtract point coordinates. Create another class Shape, which will form the basis of a set of shapes. The Shape class will contain default functions to calculate area and circumference of the shape, and provide the coordinates (Points) of a rectangle that encloses the shape (a bounding box). These will be overloaded by the derived classes; therefore, the default methods for Shape will only print a simple message to standard output. Create a display() function for Shape, which will display the name of the class and all stored information about the class (including area, circumference and bounding box). Build the hierarchy by creating the Shape classes Circle, Rectangle and Triangle. Search the Internet for the rules governing these shapes, if necessary. For these three Shape classes, create default constructors, as well as constructors...

I need help in improving my Elevator class and it's subclasses code. This is an elevator simulator that uses polymorphism and object-oriented programming to simulate the movement of elevators in a building with multiple types of passengers and elevators. There are 4 types of elevators in the system:StandardElevator: This is the most common type of elevator and has a request percentage of 70%. Standard elevators have a maximum capacity of 10 passengers.ExpressElevator: This type of elevator has a request percentage of 20%. Express elevators have a maximum capacity of 8 passengers and are faster than standard elevators.FreightElevator: This type of elevator has a request percentage of 5%. Freight elevators have a maximum capacity of 5 passengers and are designed to transport heavy items.GlassElevator: This type of elevator has a request percentage of 5%. Glass elevators have a maximum capacity of 6 passengers and are designed to transport fragile item Classes should have this: Elevator {...

Write a program which controls a metro train and that keeps track of stations and who gets on and off. write a short description of how the code is designed. Design and implement a class called train, which has at least the following: At least the following attributes (you can include others): metroID stationNum which keeps track of the station that the train is at. iii. direction which keeps track of the direction the train is travelling in. passTotal which keeps track of the number of passengers currently on the train. A default constructor which sets the metroID to a random number between 1 and 1000, the station number to 0, the direction (int), and the passTotal to 0 (train is empty). A constructor with one parameter; the parameter is the metro id. The constructor assigns the passed integer to the metroID attribute; the rest of the attributes are set as described in the default constructor. Accessor methods for each attributes. Mutator methods for each attributes....

MAKE CODE ACCORDING TO THE TEMPLATE PROVIDE AT THE END OF THE QUESTION. MATCH INPUT AND OUTPUT AS IT IS. ------------------------start--------------------------------- Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement. Write a C++ program to the donor and address details and display it. The class Address has the following public data members. Data Type Variable string street string city string state string country The class Donor has the following public data members. Data Type Variable string name int age float height Address address Include the following method in the Donor class. Method Member Function void displayDetails() To display all the details of a donor. In the main() method, obtain address and donor details from the user in the console and display it by calling...

Please write Java Code per the instructions and make sure code compiles before submitting. Thank you!

The Factory method design pattern is useful since it can be used to create new objects of a particular type dynamically. True False

Create a Point class to hold x and y values for a point. Create methods show(), add() and subtract() to display the Point x and y values, and add and subtract point coordinates. Create another class Shape, which will form the basis of a set of shapes. The Shape class will contain default functions to calculate area and circumference of the shape, and provide the coordinates (Points) of a rectangle that encloses the shape (a bounding box). These will be overloaded by the derived classes; therefore, the default methods for Shape will only print a simple message to standard output. Create a display() function for Shape, which will display the name of the class and all stored information about the class (including area, circumference and bounding box). Build the hierarchy by creating the Shape classes Circle, Rectangle and Triangle. Search the Internet for the rules governing these shapes, if necessary. For these three Shape classes, create default constructors, as well as constructors...

Create a class called Elevator that can be moved between floors in an N-storey building. Elevator uses a constructor to initialize the number of floors (N) in the building when the object is instantiated. Elevator also has a default constructor that creates a five- (5) storey building. The Elevator class has a termination condition that requires the elevator to be moved to the main (i.e., first) floor when the object is cleaned up. Write a finalize() method that satisfies this termination condition and verifies the condition by printing a message to the output, Elevator ending: elevator returned to the first floor. In main(), test at least five (5) possible scenarios that can occur when Elevator is used in a building with many floors (e.g., create, move from one floor to another, etc.). Hint: Termination occurs when the instance is set to null. You may wish to investigate "garbage collection" for this exercise.

a constructor that takes in an int, a string, and a double, constructor will assign them to the ID, name, and Averageinstance variables, then a no-argument (zero-parameter) constructor that will set the ID to the name to "No name assigned" and the Average to –1.0. With an accessor method for the name variable and a mutator method for the average variable. a toString() method that will display all three instance variables on a single line, with a " | " between each one. and then an equals() method that returns true only if all three instance variables are equal

Refer to the following interface: Provide two examples (screenshots) that in many ways could improve the above or similar interface using the principles of direct manipulation. Explain the relevant improvements as well. (Examples might have different object, labels and organization)

Override the testOverriding() method in the Triangle class. Make it print "This is theoverridden testOverriding() method". (add it to triangle class don't make a new code based on testOverriding in SimpleGeometricObject class.) (this was the step before this one) Add a void testOverriding() method to the SimpleGeometricObject class. Make it print"This is the testOverriding() method of the SimpleGeometricObject class"