Q 1: Access class members from the same package Note: ClassA and ClassB in this question are in the same package. public class ClassB { public int x = 1; int y = 2; private int z =3; } 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 */ } } 1.1- Which statement(s) are true? Choose all that аpply. a. If statement 1 is uncommented, the code prints "1" to the output. b. If statement 2 is uncommented, the code prints "2" to the output. c. If statement 3 is uncommented, the code prints "3" to the output. .d. This code does not compile 1.2- Try to do the following: • Declare a character type variable myChar in the class ClassB, the variable myChar shouldn't be accessible through the object cb. • Add a statement to the classA to test whether myChar is accessible.

Q 1: Access class members from the same package Note: ClassA and ClassB in this question are in the same package. public class ClassB { public int x = 1; int y = 2; private int z =3; } 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 */ } } 1.1- Which statement(s) are true? Choose all that аpply. a. If statement 1 is uncommented, the code prints "1" to the output. b. If statement 2 is uncommented, the code prints "2" to the output. c. If statement 3 is uncommented, the code prints "3" to the output. .d. This code does not compile 1.2- Try to do the following: • Declare a character type variable myChar in the class ClassB, the variable myChar shouldn't be accessible through the object cb. • Add a statement to the classA to test whether myChar is accessible.

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter11: More Object-oriented Programming Concepts

Section: Chapter Questions

Problem 15RQ

See similar textbooks

Similar questions

(Java) Make the 2 following classes: Employee.java EmployeeTest.java Copy and paste the below starter code into Employee.java: /** * Employee.java extends Person.java * @author * CIS 36B, Activity 11.1 */public class Employee extends Person { private static int numEmployees = 0; private double salary; private String title; /** * Default constructor for the * Employee class. Calls the * default constructor of the * superclass and also initializes * salary and title to default * values */ public Employee() { } /** * Multi-argument constructor for the * Employee class. Calls the * multi-argument constructor of the * superclass and also initializes * salary and title to the * specified values */ public Employee(String name, int age, String gender, Address a, double salary, String title) { } /** * Returns the annual salary * @return the salary */ public double…
This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to format the salary…
Question :- Add a statement to the classA to test whether myChar is accessible. public class ClassB { public int x = 1; int y = 2; private int z =3; } 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 */ } }
Exercise 1 Consider the following definition of the class MyClass: public class MyClass { private static int count = 0; private int x; public MyClass(int i) { x = i; } public void incrementCount() { count++;    } public void printX() { System.out.println("Value of x : " + x); } public static void printCount() { System.out.println("Value of count : " + count); } } public class MyClassDemo { public static void main(String[] args) { MyClass myObject1 = new MyClass(5); MyClass myObject2 = new MyClass(7);    } } What is the output of the following Java code? (Assume that following statements are written inside main) myObject1.printX(); myObject1.incrementCount(); MyClass.incrementCount(); myObject1.printCount(); myObject2.printCount(); myObject2.printX(); myObject1.setX(14); myObject1.incrementCount();…
dayType Class We will be working on a project that designs a class calendarType, so that a client program can use this class to print a calendar for any month starting Jan 1. 1900. An example of the calendar for September 2019 is: September 2019 Sun Mon Tue Wed Thu Fri Sat    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 We will develop several classes which will work together to create a calendar. The first of these classes is called dayType which will manipulate a day of the week. The class dayType will store a day, such as Sun for Sunday. The class should be able to perform the following operations on an object of type dayType: a. Set the day. b. Print the day. c. Return the day. d. Return the next day. e.…
Lab 8.1 Declare Card subclasses Consider using the following Card class. public class Card{   private String name;   public Card()   {      name = "";   }   public Card(String n)   {      name = n;   }   public String getName()   {      return name;   }   public boolean isExpired()   {      return false;   }   public String format()   {      return "Card holder: " + name;   }} Use this class as a superclass to implement a hierarchy of related classes:Write declarations for each of the subclasses. For each subclass, supply private instance variables. Leave the bodies of the constructors and the format methods blank for now. Class Data IDCard ID number CallingCard Card number, PIN DriverLicesnse Expirationyear Important: DriverLicense is subclass of IDCard class Lab 8.2 Provide constructors for Card subclasses Implement constructors for each of the three subclasses. Each constructor should call the superclass constructor to set the name. Here is one example: public…
Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName,    String firstName, int salary) {    this.id = id;    this.lastName = lastName;    this.firstName = firstName;    this.salary = salary; } //Define the getter methods. public String getId() {    return id; } public String getLastName() {    return lastName; } public String getFirstName() {    return firstName; } public int getSalary() {    return salary; } //Define the method to return the employee details. @Override public String toString() {       //Use number format and decimal format    //to…
Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName,    String firstName, int salary) {      this.id = id;      this.lastName = lastName;      this.firstName = firstName;      this.salary = salary; } //Define the getter methods. public String getId() {      return id; } public String getLastName() {      return lastName; } public String getFirstName() {      return firstName; } public int getSalary() {      return salary; } //Define the method to return the employee details. @Override public String toString() {       //Use number format and decimal format    //to…
Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName,    String firstName, int salary) {    this.id = id;    this.lastName = lastName;    this.firstName = firstName;    this.salary = salary; } //Define the getter methods. public String getId() {    return id; } public String getLastName() {    return lastName; } public String getFirstName() {    return firstName; } public int getSalary() {    return salary; } //Define the method to return the employee details. @Override public String toString() {       //Use number format and decimal format    //to…
Write a java program in which Animal:Create a class Animal and Add a protected data member named id of integer type.• Add get/set methods for id data member in Animal class with public access. Also provide default constructor this should initialize id to 0.• Also provide parameterized constructor and toString method.• Add an abstract method tellAboutSelf method to Animal class with public access• Add another abstract method speak method to Animal class.Reptile, Bird, MammalNext create the three child classes which extends form Animal class.• Add a default constructor to each of the above created class. The constructor should initialize the id data member id, Reptile, Bird and Mammal, to 1, 2 and 3 respectively also it display a message “(class Name)’s default constructor”. E.g. for Bird it says “Bird’s default constructor”.• Add a parameterized constructor to each of the above created class. The constructor should initialize the id data member, Reptile, Bird and Mammal, to the…
class first { public: void setX(); void print() const; protected: int y; void setY(int a); private: int x; }; Suppose that class second is derived from class first using the statement: class second: private first which members of class first are private, protected, and public in class second?
Write a Java class Student inherited from Person class. Your class must have the following features: Student - major: String + Student() + Student(name: String, id: int, major: String) + getMajor(): String + Override toString() method: you have to return needed data Fields values. Note: major data members can take only CS for Computer Science, CIS for Computer and Information Systems, CPE for Computer Engineering, SE for Software Engineering, and NES for Network Engineering and Security.