**4. Consider the following classes:**```javapublic class Animal { public Animal(String itsName) { name = itsName; } public void setName(String itsName) { name = itsName; } public String getName() { return name; } private String name;}public class Dog extends Animal { public Dog(String itsName) { super(itsName + "Dog"); sound = "Bark!"; } public void setSound(String itsSound) { sound = itsSound; } public String getSound() { return (getName() + sound); } public String getName(int choice) { if(choice > 0) return super.getName(); else return "AnyDog"; } public String getName() { return super.getName() + "OK"; } private String sound;}```**In addition, the following lines of code have been placed in a main class:**```javapublic static void main(String[] args) { Animal a1 = new Animal("Tweety"); Animal a2 = new Dog("Rover"); Dog d1 = new Dog("Spot"); ...}```**Give the values of the following expressions. If an expression is erroneous, state why.**a) `a1.getName()`- **Output:** `Tweety`b) `a2.getName()`- **Output:** `RoverDogOK`c) `a2.getName(0)`- **Error:** Method `getName(int)` is not available in `Animal`d) `(new Animal()).getName()`- **Error:** Constructor `Animal` requires a `String` argumente) `d1.getName()`- **Output:** `SpotDogOK`f) `d1.getName(1)`- **Output:** `SpotDog`g) `((Animal)d1).getName()`- **Output:** `SpotDogOK`h) `((Dog)a1).getName()`- **Error:** `Animal` cannot be cast to `Dog`i) `d1 instanceof Animal`- **Output:** `true`j) `a1 instanceof Dog`- **Output:** `false`k) `a1.getSound()`- **Error:** Method `getSound()` is not available in `Animal`l) `a2.get

NOTE : Answering only first 3 sub parts as per the guidelines. This is a java question. In this…

Answered: 4. Consider the following classes:…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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class smart { public: void print() const; void set(int, int); int sum(); smart(); smart(int, int); private: int x; int y; int secret(); }; class superSmart: public smart { public: void print() const; void set(int, int, int); int manipulate(); superSmart(); superSmart(int, int, int); private: int z; }; Now answer the following questions: a. Which private members, if any, of smart are public members of superSmart? b. Which members, functions, and/or data of the class smart are directly accessible in class superSmart?
Question p .Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line
Find the error(s) in the following class definition: public class TestClass private int value1; private int value2; public void TestClass(int num1, int num2) { value1= num1; value2 = num2; }
Incorrect Question 4 Consider public class Species { } // fields private String name; private int population; private double growthRate; // constructor public Species () { } name = "No Name Yet"; population = 0; growthRate = 33.3; Which of the following is the best setter method for the population instance variable? public boolean setPopulation(int newPopulation) { } if (newPopulation>= 0) { } population = newPopulation; return false; } return true; public public void setPopulation (int newPopulation) if (newPopulation>= 0) { } population newPopulation; public void setPopulation (int newPopulation) { population } = newPopulation;
public class Cat extends Pet { private String breed; public void setBreed(String userBreed) { breed = userBreed; } public String getBreed() { return breed; }} public class Pet { protected String name; protected int age; public void setName(String userName) { name = userName; } public String getName() { return name; } public void setAge(int userAge) { age = userAge; } public int getAge() { return age; } public void printInfo() { System.out.println("Pet Information: "); System.out.println(" Name: " + name); System.out.println(" Age: " + age); } } import java.util.Scanner; public class PetInformation { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); // create a generic Pet and a Cat Pet myPet = new Pet(); Cat myCat = new Cat(); // declare variables for pet and cat info String petName, catName, catBreed; int petAge,…
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