reference is used to refer to a child class object. class Main ( public static void main(String(] args) { Animal al: al - new Animal (); a1. displayInfo (); al - nev Dog () ; al. displayinfo (); Figure 2. Polymorphism (a) Create a class name Animal to produce a method named displayInfo (). Define the method by displaying info that represent the class name.

reference is used to refer to a child class object. class Main ( public static void main(String(] args) { Animal al: al - new Animal (); a1. displayInfo (); al - nev Dog () ; al. displayinfo (); Figure 2. Polymorphism (a) Create a class name Animal to produce a method named displayInfo (). Define the method by displaying info that represent the class name.

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter1: A First Program Using C#

Section: Chapter Questions

Problem 7RQ: The technique of packaging an objects attributes into a cohesive unit that can be used as an...

See similar textbooks

Similar questions

The term __________ refers to an object’s ability to take different forms. a. multi-instance b. by referencing c. polymorphism d. oligopoly
Modify the given codes to remove the compilation errors. 1. public interface Carnivore { int pieces = 10; public static void eatGrass(); public int chew() { return 13; } } 2. Interface HasWings { public int getNumberOfWings(); } abstract class Insect implements HasWings { abstract int getNumberOfLegs(); } public class Dragonfly extends Insect { int getNumberOfLegs() { return 6; } }
Code: import java.util.*; //Bicycle interface interface Bicycle { abstract void changeCadence(int newValue); //will change value of candence to new value abstract void changeGear (int newValue); //changes gear of car abstract void speedUp(int increment); //increments speed of car by adding new Value to existing speed abstract void applyBrakes(int decrement); } //ACMEBicycle class definition class ACMEBicycle implements Bicycle { int cadence = 0; Â Â int speed = 0; Â Â int gear = 1; //methods of interface public void changeCadence(int newValue) { this.cadence=newValue; } public void changeGear (int newValue) { this.gear=newValue; } public void speedUp(int increment) { this.speed+=increment; } public void applyBrakes(int decrement) { this.speed-=decrement; } //display method void display() { System.out.println("Cadence: "+this.cadence); System.out.println("Gear: "+this.gear); System.out.println("Speed: "+this.speed); } } //KEYOBicycle class definition class KEYOBicycle implements…
Write a Program in java to define a Student class, with member variables String name; int cms String DegreeProg Make a default constructor, Make a parameterized constructor. Overload the above Constructor. Provide getters and setters for data members. Inside main, create 2 students objects. Take data from user and set the values for the 2 students. At the end Print daTa.
Encapsulation and polymorphism, both object-oriented ideas, are linked with object models.
Describe one advantage of requiring a class to implement an interface.
Polymorphism is a term that should be defined.
C++ Language Please Write a program that implements four classes: NPC, Flying, Walking, and Generic for a fantasy roleplaying game. Each class should have the following attributes and methods: NPC -a parent class that defines methods and an attribute common to all non-player characters (npc) in the game. a private string variable named name, for storing the name of the npc. a default constructor for setting name to "placeholder". an overloaded constructor that sets name to a string argument passed to it. setName - a mutator for updating the name attribute getName - an accessor for returning the npc name printStats - a pure virtual function that will be overridden by each NPC subclass. Flying - a subclass of NPC that defines a flying npc in the game a private int variable named flightSpeed for tracking the speed of the npc. a default constructor for setting flightSpeed to 0 and name to "Flying" using setName. setFlightSpeed - a mutator that accepts an integer as it's only argument…
import components.naturalnumber.NaturalNumber;import components.naturalnumber.NaturalNumber2;import components.simplewriter.SimpleWriter;import components.simplewriter.SimpleWriter1L; /*** Program with implementation of {@code NaturalNumber} secondary operation* {@code root} implemented as static method.** @author Mati Desissa**/public final class NaturalNumberRoot { /*** Private constructor so this utility class cannot be instantiated.*/private NaturalNumberRoot() {} /*** Updates {@code n} to the {@code r}-th root of its incoming value.** @param n* the number whose root to compute* @param r* root* @updates n* @requires r >= 2* @ensures n ^ (r) <= #n < (n + 1) ^ (r)*/public static void root(NaturalNumber n, int r) {assert n != null : "Violation of: n is not null";assert r >= 2 : "Violation of: r >= 2"; double lowEnough = 0;double tooHigh = n.toInt();double power = 1.0 / r;double value = Math.pow(tooHigh, power);double guess = (1.0) * tooHigh / 2; while ((int) guess !=…
The class Store has to implement the following functionalities 1 public class Store2 {34 //Fields TODO56 //Initializes the fields of the store object7 public Store(String shopName)8 {9 //TODO10 }1112 //Adds a product with name = id and price = price to the catalogue ofproducts sold by the StoreChain13 //Returns true if the operation is successful (i.e., you can add a newproduct that doesn’t already exist)14 public static boolean addNewProduct(String id, double price)15 {16 //TODO17 }1819 //Removes a product from the catalogue of the StoreChain20 //Returns the removed Product if the operation is successful (i.e, theproduct existed in the catalogue), null otherwise21 public static Product removeFromCatalogue(String id)22 {23 //TODO24 }2526 //Changes the price of a product in the catalogue of the StoreChain27 //Returns true if the operation is successful (i.e., you reprice anexisting product)28 public static boolean repriceProduct(String id, double price)29 {30 //TODO31 }3233 //Stocks a…
write a class implementation using C++ from the given class diagram TAKE NOTEOF THE FF SPECIFICATIONS: Using the constructor, create three objects from class Voters and store it in the stack memory. Two voters must have an active account and one voter has a deactivated account. Please note that the deactivated voter account must be still part of the “object”. Test all the functions by making calls. this should be the sample result. Please use simple codes only.
Create a UML diagram to help design the class baby. class Baby{ //data members private String name; private int age; //default constructor Baby() { name = "xyz"; age = 3; } //parameterized constructor Baby(String n,int a){ name = n; age = a; } //sets name public void setname(String n){ if(n.isEmpty()) name = "xyz"; else name = n; } //sets age public void setage(int a){ if(!(a>=1 && a<=4)) age = 2; else age = a; } //returns name public String getname(){ return name; } //returns age public int getage(){ return age; } //check if two objects have same name and age public boolean equals(Baby b){ if (age==b.getage() && name.equalsIgnoreCase(b.getname())) return true; else return false; } } public class Main { public static void main(String[] args) { //two objects of type Baby Baby A=new Baby("abcd",3); Baby B= new Baby("abcd",3); //print information of object System.out.println("Name:" + A.getname() + " age:"+ A.getage()); //call equals on obejct…