JAVAWhat can I change to make it work? public class ForgetfulCritter extends CritterX}private String event;public void addHistory (String event) {event = "?";super.addHistory();} public class ForgetfulCritter Tester{}]public static void main(String[] args){Critter dopey = new ForgetfulCritter();dopey.addHistory ("eat");System.out.println(dopey.getHistory());System.out.println("Expected: [?]");System.out.println(dopey.getHistory ());System.out.println("Expected: [?, ?]");dopey.move(10);

Ans. Inheritance in Java is the method to create a hierarchy between classes by inheriting from…

Answered: public class ForgetfulCritter extends…

public class ForgetfulCritter extends Critter XxX private String event; public void addHistory (String event) { event = "?"; super.addHistory(); }

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 12RQ

See similar textbooks

Similar questions

public class Application { public static void main(String[] args) { Employee empl = new Employee(); empl.firstName = "Ali"; empl.lastName = "Omar"; empl.salary = 20000; Employee emp2 = new Employee(); emp2.firstName = "Mohamed"; emp2.lastName = "Nour"; emp2.salary = 30000; System.out.println("- System.out.printin("- empl.employeeSalary(); System.out.println("- empl.checkEmployeeSalary(emp1.salary, emp2.salary); System.out.printin("- System.out.println("- printEmployee(emp2); System.out.printin("- Employee employeeArr[] = new Employee[2]: employeeArr[0] = empl; employeeArr[1] = emp2; Application a = new Åpplication(); a.printArrayofEmployee(employeeArr); Non static (instance) start to call Static function to print ---------"); "); - Non Static function to print - --"); Non static (instance) start to call same class Static function to print --------); -"); Non Static function to print ----); System.out.println("- System.out.printin("- System.out.printin("Salary : " + Employee.salary);…
public class LabProgram { public static void main(String args[]) { Course course = new Course(); String first; // first name String last; // last name double gpa; // grade point average first = "Henry"; last = "Cabot"; gpa = 3.5; course.addStudent(new Student(first, last, gpa)); // Add 1st student first = "Brenda"; last = "Stern"; gpa = 2.0; course.addStudent(new Student(first, last, gpa)); // Add 2nd student first = "Jane"; last = "Flynn"; gpa = 3.9; course.addStudent(new Student(first, last, gpa)); // Add 3rd student first = "Lynda"; last = "Robison"; gpa = 3.2; course.addStudent(new Student(first, last, gpa)); // Add 4th student course.printRoster(); } } // Class representing a student public class Student { private String first; // first name private String last; // last name private double gpa; // grade point average…
please
Java class Main { publicstaticvoid main(String[] args) { // Coin myPenny = new Coin(CoinType.PENNY); // Coin myNickel = new Coin(CoinType.NICKEL); // Coin myDime = new Coin(CoinType.DIME); // Coin myQuarter = new Coin(CoinType.QUARTER); // Coin myHalfDollar = new Coin(CoinType.HALF_DOLLAR); // Coin myDollar = new Coin(CoinType.DOLLAR); // System.out.println(printValue(myPenny)); // System.out.println(printValue(myNickel)); // System.out.println(printValue(myDime)); // System.out.println(printValue(myQuarter)); // System.out.println(printValue(myHalfDollar)); // System.out.println(printValue(myDollar)); } publicstatic String printValue(Coin c){ String result = ""; // result = String.format("The value of a %s is $%.2f", c.getName(), c.getValue()); return result; } }
object oriented programming using c++ class decleration: class MyPhoneBook{ string* names; string* phones; int phoneBookSize; public: MyPhoneBook(int); //Takes size MyPhoneBook(const MyPhoneBook&); //Copy Constructor bool addEntry(string ,string); bool displayEntryAtIndex(int); void displayEntryAtIndices(int*); void displayAll(); int* findByName(string); int* findByPhone(string); bool updateNameAt(string, int); bool updatePhoneAt(string, int); ~MyPhoneBook();};
/* TestCarSensor.java - program to test the CarSensor class.*/public class TestCarSensor{public static void main (String[] args){CarSensor generic = new CarSensor();CarSensor tempCel = new CarSensor("temperature sensor", -50, +300, "C"); CarSensor speed = new CarSensor("speed sensor", 0, 200, "km/h"); CarSensor speed2 = new CarSensor("speed sensor 2", 0, 200, "m/h"); // 2. test changing desc and limitsSystem.out.println ();System.out.println ( generic ); // display generic sensor (zero)generic.setDesc ("special sensor"); // change descriptiongeneric.setLimits (-5,5,"units"); // change limitsSystem.out.println ( generic ); // display generic sensor again// 3. test displaying object (calling .toString() )System.out.println ();System.out.println ( tempCel );System.out.println ( speed );System.out.println ( speed2 );// 4. test setlimits() ruleSystem.out.println ();System.out.println ( generic ); generic.setLimits (10, -10, "blah"); System.out.println ( generic ); generic.setLimits (-10,…
What is outpout? public class Vehicle { public void drive(){ System.out.println("Driving vehicle"); } public class Plane extends Vehicle { @Override public void drive(){ System.out.println("Flying plane"); } public static void main(String args[]) { Vehicle myVehicle myVehicle.drive(); } } = new Plane(); syntax error Driving vehicle Flying plane Flying plane O Driving vehicle
public class Course { private String courseNumber, courseTitle; public Course() { } public Course(String courseNumber, String courseTitle) { this.courseNumber = courseNumber; this.courseTitle = courseTitle; } public void setCourseNumber(String courseNumber) { this.courseNumber = courseNumber; } public void setCourseTitle(String courseTitle) { this.courseTitle = courseTitle; } public String getCourseNumber() { return courseNumber; } public String getCourseTitle() { return courseTitle; } public void printInfo() { System.out.println("Course Information: "); System.out.println(" Course Number: " + courseNumber); System.out.println(" Course Title: " +…
class Student { private int age = 18; public Student() { age = 19; } } public class Test { public static void main (String[] args){ Student s = new Student(); System.out.println (s.age); } }
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
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); Pet myPet = new Pet(); Cat myCat = new Cat(); String petName, catName, catBreed; int petAge, catAge; petName = scnr.nextLine(); petAge = scnr.nextInt(); scnr.nextLine(); catName = scnr.nextLine(); catAge = scnr.nextInt(); scnr.nextLine(); catBreed = scnr.nextLine(); // TODO: Create generic pet (using petName, petAge) and then…