What OOP concept/mechanism is employed in the code below? 1-public class Plant { 2- String scientificName; 3- double price; 4- boolean isFruitBearing() { return false;} 5- boolean isFruitBearing (boolean cond) { 6- if (cond) return true; else return false; 7-} 8-} A. encapsulation OB. inheritance OC. extension OD. overriding OE. overloading OF. polymorphism

What OOP concept/mechanism is employed in the code below? 1-public class Plant { 2- String scientificName; 3- double price; 4- boolean isFruitBearing() { return false;} 5- boolean isFruitBearing (boolean cond) { 6- if (cond) return true; else return false; 7-} 8-} A. encapsulation OB. inheritance OC. extension OD. overriding OE. overloading OF. polymorphism

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 5RQ

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public class FoodItem { private String name; private double fat; private double carbs; private double protein; // TODO: Define default constructor // TODO: Define second constructor with parameters to initialize private fields (name, fat, carbs, protein) public String getName() { return name; } public double getFat() { return fat; } public double getCarbs() { return carbs; } public double getProtein() { return protein; } public double getCalories(double numServings) { // Calorie formula double calories = ((fat * 9) + (carbs * 4) + (protein * 4)) * numServings; return calories; } public void printInfo() { System.out.println("Nutritional information per serving of " + name + ":"); System.out.printf(" Fat: %.2f g\n", fat); System.out.printf(" Carbohydrates: %.2f g\n", carbs); System.out.printf(" Protein: %.2f g\n", protein); }} import java.util.Scanner; public class NutritionalInfo {…
2. Add a constructor for Animal class shown. The constructor should pass in a string parameter named "sound". 1 using System; 2 3 public class Animal 4 { 5 public string Sound { get; set; } public void Speak() { Console.Writeline("The dog says " + Sound); } 10 11 } 12 13 public class Program 14 { public static void Main() { 15 16 17 18 } 19 } A 00
class Player { protected: string name; double weight; double height; public: Player(string n, double w, double h) { name = n; weight = w; height = h; } string getName() const { return name; } virtual void printStats() const = 0; }; class BasketballPlayer : public Player { private: int fieldgoals; int attempts; public: BasketballPlayer(string n, double w, double h, int fg, int a) : Player(n, w, h) { fieldgoals = fg; attempts = a; } void printStats() const { cout << name << endl; cout << "Weight: " << weight; cout << " Height: " << height << endl; cout << "FG: " << fieldgoals; cout << " attempts: " << attempts; cout << " Pct: " << (double) fieldgoals / attempts << endl; } }; a. What does = 0 after function printStats() do? b. Would the following line in main() compile: Player p; -- why or why not? c. Could…
True or False Properties in a base class cannot be overridden in the same way that methods can be overridden.
Java Assignment Outcomes: Student will demonstrate the ability to utilize inheritance in a Java program. Student will demonstrate the ability to apply the IS A and HAS A relationships. Program Specifications: Start by watching Video Segment 16 from Dr. Colin Archibald's video series (found in the module overview). Key in the program shown in the video and make sure it works. Then, add the following: Animals have a Weight. Animals have a Height. Dog is an Animal. Dogs have a Name. Dogs have a Breed. Dogs have a DOB. Cat is an Animal Cats have a Name. Cats have 9 lives, so you need to keep track of the remaining lives once a cat dies. Bird is an Animal Birds have a wing span Birds have a canFly which is true or false (some birds cannot fly) Create a test class that creates one of each type of animal and displays the animal’s toString method. Submission Requirements: You must follow the rules from the prior assignments. UMLs and Design Tools are not required for this one. YOU MAY…
7. public class Father { public String name; public int age; // customer name Father(){ name="Hassan"; age=50;} public void display(){ System.out.println("Name:"+name); System.out.println("Age:"+age); }} Figure 3 i. Based on Figure 3, create a class named Child that inherits the Father class. Declare an instance name location (String) for class Child. ii. Define a constructor in class Child and give an appropriate initial values for the instance (name, age, location). Define a method display () in class Child, execute the display () method in superclass using the keyword super. Method display () in class Child should print the information of name, age and location. ii.
Q:-Write a statement in ClassA to check out the accessibility of your variable. package package_02; public class ClassB { public int x = 1; int y = 2; private int z =3; } package package_01; import package_02.ClassB; public class ClassA { public static void main(String[] args) { ClassB cb = new ClassB(); // System.out.print(cb.x); /* 1 */ // System.out.print(cb.y); /* 2 */ // System.out.print(cb.z); /* 3 */ } }
Q 3: Different packages and access modifiers package package_02; public class ClassB { public int x = 1; int y = 2; private int z = 3; public void myMethod() { System.out.print(x); System.out.print(y); System.out.print(z); } } package package_01%; import package_02.ClassB; public class ClassA { public static void main(String] args) { ClassB cb = new ClassB(); cb.myMethod(); } } 3.1- Which statement(s) are true? Choose all that apply. a. This code prints "123" to the output. b. If you remove the "public" modifier from the ClassB, the code writes "123" to the output. c. If you remove the "public" modifier from the method myMethod, the code prints "123" to the output. d. This code does not compile 3.2- What do you expect if you remove the public keyword from the ClassB (public class ClassB{..})?
Remaining Time: 35 minutes, 18 seconds, ¥ Question Completion Status: A class named Account is defined as the following. class Account } private: int id; double balance; public: //A constructor without parameter that creates a default account with id 0, balance 0 Account): /A constructor with the parameter that setting the id and balance Account(int, double), int getId); / return the ID double getBalance() //return the balance void withdraw(double amount) // the amount will be withdrawn void setlID(int), //set the ID void setBalance (double) //set the balance }: Assume that we will create a separate file of implementation of the function definition for the questions a) -b) a) Write a construction function definition with two parameters (ID and balance). b) Write a function definition of the function declaration (void withdraw(double amount):). c) Creates an Account object with an ID (1122) and balance ($20000). Then, write source codes to withdraw $2 MacBoo
class GradedActivity { private: double score; public: GradedActivity() { score = 0.0; } GradedActivity(double s) { score = s; } void setScore(double s) { score = s; } double getScore() { return score; } char getLetterGrade() const; }; Implement the GradedActivity class above. In this C++ assignment, create a new class Assignment which is derived from GradedActivity. It should have three private member ints for 3 different parts of an assignment score: functionality (max 50 points), efficiency (max 25 points), and style (max 25 points). Create member function set() in Assignment which takes three parameter ints and sets the member variables. It should also set its score member, which is inherited from GradedActivity, using the setScore() function, to functionality + efficiency + style. Signature: void Assignment::set(int, int, int) Create a main program which instantiates an Assignment, asks the user…
C# languageCreate a class for “Plane” having functionalities (methods) startengine(), fly() and land(). When ever engine starts it should reset the attribute TTK (Total travel kilometer) to zero and attribute Fuel to 100. On fly() it should add 10 kilometers if the Fuel attribute is greater than zero and decrement Fuel by 20.On land() it should print total distance covered. Write the code providing all necessary details. And then show working object of Plane in main().
This code will be used to answer the question at the bottom. public class AccountBalance {private long accountNumber;private String ownersName;private double balance;public AccountBalance(long accountNumber, String ownersName, double balance) {this.accountNumber = accountNumber;this.ownersName = ownersName;setBalance(balance);}public long getAccountNumber() {return accountNumber;}public void setAccountNumber(long accountNumber) {this.accountNumber = accountNumber;}public String getOwnersName() {return ownersName;}public void setOwnersName() {this.ownersName = ownersName;}public double getBalance() {return balance;}public void setBalance(double balance) {if (balance < 0) {System.out.println("Balance Cannot be Negative.");balance = 0;}this.balance = balance;}}class CheckingAccount extends AccountBalance{CheckingAccount(long a, String b, double c){super(a,b,c);displayAccount();}public boolean deposit(double a) {if(a<=0)System.out.println("Invalid…