Abstraction is a concept of OOP which advocates for hiding of unnecessary information. For example, if a superclass is not meant to be instantiated, it can be abstracted such that no instances will be made -- only non-abstract instances that extend it can be made. True False
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- Interfaces are used to define stronger is-a relationships because one class can inherit multiple interfaces. Ture or falseImplement the following UML class diagrams which include an abstract class Employee, an interface TaxCalculator, and a child class Faculty. Employee > TaxCalculator +TAX_PERCENT: int = 15 - id : int - name : String age : int + yoarlylncome Tax( : double + yeariylncomeWithouRTax() ; double Employee (id : int, name : String, age : int) + Getters + Setters + yearlySalary() : int Wabstract + yearlyincome) : int Mabstract Faculty - initial : String monthlySalary : int - yearlyBonus : int • Faculty (id: int, name : String, age : int, initial : String, monthilySalary : int, yearlyBonus : int) + Getters + Setters + toString0 : Stringcreate a uml class diagram on this code: from abc import ABC, abstractmethod class GreyAnatomy(ABC):@abstractmethoddef Tvshow(self):pass class Grey(GreyAnatomy):def Tvshow(self):print("I am Derek") class Rank(Grey):def Tvshow(self):print("I am an attending") class Specialty(Rank):def Tvshow(self):print("I am an neurosurgeon doctor") G = Grey()G.Tvshow() R = Rank()R.Tvshow() S = Specialty()S.Tvshow()
- From a practical standpoint, interfaces outperform abstract classes.A subclass of an abstract class must implement all of the parent class's abstract methods. Is it true or false?import bridges.base.ColorGrid;import bridges.base.Color;public abstract class Mark {// this is protected (rather than private) so that// subclasses of Mark can access itprotected Color color;/*Returns true if and only if the given Coloris the same as this Mark's Color. Two Colorsare considered the same if their Red, Green,Blue, and Alpha components are equal.c: the Color to check against*/public boolean isColor(Color c) {return false;}/*Draws this Mark onto the given ColorGridcg: the ColorGrid to draw onto*/public abstract void draw(ColorGrid cg);} import bridges.base.Color;import org.junit.Assert;import org.junit.Test;public class MarkTest {private static final Color B = new Color("black");private static final Color W = new Color("white");private static final Color U = new Color("blue");@Testpublic void isColorTest() {Mark m1 = new Point(0, 0, W);Mark m2 = new HorizontalLine(1, 1, 2,…
- Implement a JAVA application that keeps track of package deliveries to consumers. Theapplication consists of the following classes:• Item: Create a class called Item. The class has two member variables oftype String named name and description and provides getter and settermethods for both.• Mail (abstract class): Implement an abstract class called Mail . The class hasa member variable of type String named address and a getter method for it.• Letter: Implement a class called Letter that inherits from Mail . The classhas one member variable of type String named contents.• Package: Implement a class called Package that inherits from Mail . Theclass has one member variable of type Item[] named items and a gettermethod for it.• DeliveryTruck: Implement a class called DeliveryTruck with a singlemember variable of type Mail[] of length 10. Add the following method:o void load(Mail mail): This method stores the given mail argumentat the next available spot in the member variable.Write an abstract class, it can be anything well defined from the very basics.A subclass of an abstract class is required to implement all of the abstract methods of the parent class. Is it correct or incorrect?
- Task: Implement a class ChessPiece with properties: color, isAlive, moveCount, and position (x, y coordinates). Define an abstract move method. Create a Tower subclass that overrides move for specific behavior. Instructions: ChessPiece Class: Properties: String color, boolean isAlive, int moveCount, Position position. Abstract Method: move(int x, int y). Position Class: Contains int x, int y. Tower Subclass: Extends ChessPiece. Overrides move for straight line movement. Deliverable: Source code for ChessPiece, Position, and Tower. Document class functionalities briefly.The abstract factory provides an interface for creating families of independent objects without specifying their concrete implementation Select one: True False----------------*********************--------------- Given an abstract class Car with abstract methods like getModel and getMaxSpeed. Create a class Suzuki with following characteristics Initialize member variable of Car class using the super constructor which contains two parameters model and speed. Implement getModel & getMaxSpeed method inside the Suzuki class which returns value of car model and speed. Input: Cervo 160 where, The first line contains a value of 'model'. The second line contains a value of 'speed'. Output: Cervo 160 Solution.java: import java.util.*; public class Solution { public static void main(String[] args) { //Code goes here } } ------------------------------------------------------------- entrypoint.cz: //Enter a <FILE-NAME>.java to be executed using the command //"java ClassName", where ClassName is the name of the class //contained in a selected <FILE-NAME>.java file. Solution.java