When would you utilize an abstract class? when you require a super class that shouldn't be instantiated but can be instantiated alongside the derived classes =========== Which UML aggregate symbol? a triangle uncut diamond an empty triangle a diamond

When would you utilize an abstract class? when you require a super class that shouldn't be instantiated but can be instantiated alongside the derived classes =========== Which UML aggregate symbol? a triangle uncut diamond an empty triangle a diamond

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 20RQ

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When would you be most likely to use an abstract class? when you need to derive a class from Object when every method in the class is concrete when you need a super class that should not be instantiated when you need a super class that can be instantiated alongside the derived classes =========== Which UML symbol represents aggregation? a filled triangle an unfilled diamond an unfilled triangle a filled diamond
The Critter class is a base class with some basic functionality for running simulations of different kinds of critters. Critters can move, act, and remember their history. A typical simulation contains a number of critters of different types. In each step of the simulation, the act member function will be called on each critter. Define a class Sloth derived from Critter that simulates a sloth. Sloths alternate between eating and sleeping. Add the word "eat" or "sleep" to the history each time the act function is called. The implementation of the Critter class is not shown. Complete the following file: sloth_Tester.cpp #include <iostream>using namespace std; #include "critter.h" /**A sloth eats and sleeps.*/class Sloth : public Critter{public:Sloth();. . .private:. . .}; Sloth::Sloth(){. . .} void Sloth::act(){if (...) {add_history("eat");...}else{add_history("sleep");... }} int main(){Sloth sloth;sloth.act();cout << sloth.get_history() << endl;cout <<…
What is the difference between equals() and == ? == looks to see if they are identical objects whereas equals() matches the content of the objects. equals() looks to see if they are identical objects whereas == matches the content of the objects. equals() and | == are used to match the content of objects, so no difference. equals() is used to match string objects whereas == is used to match all objects. O O O O
Using c++ Design a Wacky class that can be used to generate a message based on the information passed to it. The class should have a single integer private member variable: int num; Design the complete class so that if: an object is created with no parameters; num is initialized to 10. an object is created with 1 parameter that is an integer; num is initialized to the integer that is passed *2 an object is created with 1 parameter that is a double; num is initialized to the double *4 an object is created with 2 parameters, a char and a string; it prints the message "That's WACKY!"
Scenario:You are hired by a game development company. Your task is to create an RPG hack & slashconsole game. The game will have a movement system that will be based on the x, y, zcoordinate system. You will need to start with creating 3 classes.1. A class that represents a player2. A class that represents an enemy3. An abstract class that contains the movement logic.Step 1:Start by creating the superclass which defines the movement system for both enemy andplayer. The movement system is based on the Coordinate system. Imagine an x, y, z plane,the y coordinate is used to move forward and backward in the virtual plane, x to go left andright, z to go up and down.For example, A player with coordinates x, y, z with values -5, 10, 0 represents a player -5units to the left, 10 units forward, and 0 z units mean on the ground. (0, 0, 0) are the baseunits which means the player or enemy is at the start of the level.Step 2:Create a class to represent the player which is derived from the…
In-class Assignment Day 8 You should draw the hierarchy for your classes to understand how the coding should be structured. Be sure to notate any classes that are abstract. Write an abstract class for Shape. The intended subclasses are Polygon, Circle, Triangle, and Rectangle. All of these will have a name, an area, and a perimeter. (Consider which methods might be abstract.) Add a toString method that will return the information about the Shape, for example: Triangle, Area: 7.5, Perimeter: 12.0 Write the class Rectangle. A Rectangle is a Shape and should have a width and a height. When a Rectangle is outputted, it should read: Rectangle, Length: #, Width: #, Area: #, Perimeter: # Write the class for Circle. Every circle is a Shape that has a radius. Be sure to provide an accessor method (getter) for the radius. When a circle is outputted, it should read: Circle, Radius: #, Area: #, Circumference: # Write a TestShape class that has the main method, which creates…
- Simple factory is not considered a design pattern because it does not decouple the client from concrete classes Select one: True False 2- structural patterns provide guidance on the way in which classes interact to distribute responsibility Select one: True False 3- The Simple factory is used when you want to limit the instantiation of classes to one implementation Select one: True False 4- When a class A is composing a reference to another class B, then we say that class A has-a class B relationship Select one: True False
Create an abstract super class called Employee with the following attributes: Use JavaDoc comments in the Parent and Child Classes only but use @author for the driver name : String and the following methods getter and setter for the one attribute two constructors an abstract method called getPay() equals() toString() Create a sub class of Employee called SalaryEmployee with the following attribute yearlyPay : double and the following methods getter and setter for the one attribute two constructors getPay() that returns the yearlyPay divided by 52 equals() toString() Create a sub class of Employee called HourlyEmployee with the following attributes: hoursWorked : double payrate : double and the following methods getters and setters for the two attributes two constructors getPay() that returns the weekly pay (multiply hoursWorked by payrate - overtime included and 1.5 times payrate for hours > 40) equals() toString() Create a sub class of Employee called SalesEmployee with the…
In java Create an abstract super class called Employee with the following attributes: name : String and the following methods getter and setter for the one attribute three constructors an abstract method called getSalary() equals() toString() Create a sub class of Employee called Faculty with the following attribute yearlyPay : double department: String and the following methods getter and setter for the attributes three constructors getSalary() that returns the yearlyPay divided by 52 equals() toString() Create a sub class of Employee called Staff with the following attributes: hoursWorked : double payrate : double and the following methods getters and setters for the two attributes three constructors getSalary() that returns the weekly pay (multiply hoursWorked by payrate, overtime included and 1.5 times payrate for hours > 40) equals() toString() Create a sub class of Employee called Sales with the following attributes: salesAmount : double //sales per week…
You have to implement program that compares graduate students based on their ranks. The design of the program is given in the following UML diagram: • Student class: Base class that GradStudent extends. • GradStudent class: The objects from this class will be used for comparisons. • Rankable interface: Defines the implementation needed for comparison. GradStudent implements this interface. • Test class will be used to get student information from the user and demonstrate the comparison of students.
In what scenarios would you choose to use an abstract class over an interface, and vice versa?
Java Doc comments at the start of all classes. Aggregation Project: Design a UML class aggregation diagram using the classes below. A class called Place. A Place will have two attributes: city state A Place will have these methods: default constructor overloaded constructor copy constructor setters and getters for all attributes get State initials – get the abbreviation for the state. You may use a utility or a case structure. (FYI, you don’t have to put all 50 states in, at least have what you have in the file. Pick a few and test. copy() equals() toString() A FunPlace class. A FunPlace will have these attributes: name type (Example house, amusement park, corn maze, escape room) price Place - this will be of the Place class (Aggregation – a class is an attribute inside another class) A FunPlace will have these methods: default constructor overloaded constructor that allows name, type, price and a Place object to be passed in overloaded constructor that allows name,…