Starting out with Visual C# (4th Edition)
4th Edition
ISBN: 9780134382609
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 10.2, Problem 10.6CP
Look at the following class definitions:
class Vegetable
{
public virtual void message()
{
MessageBox. Show (”I ’m a vegetable.’’);
}
}
class Potato : Vegetable {
public override void message()
{
MessageBox.Show(”I'm a potato.”);
}
}
Given these class declarations, what will the following code display?
Vegetable v = new Potato();
Potato p = new Potato(); v.message();
p.message();
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Look at the following class definitions:class Vegetable{ public virtual void message() { MessageBox.Show("I'm a vegetable."); }}class Potato : Vegetable{ public override void message() { MessageBox.Show("I'm a potato."); }}Given these class declarations, what will the following code display?Vegetable v = new Potato();Potato p = new Potato();v.message();p.message();
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…
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);…
Chapter 10 Solutions
Starting out with Visual C# (4th Edition)
Ch. 10.1 - In this section, we discussed base classes and...Ch. 10.1 - Prob. 10.2CPCh. 10.1 - What does a derived class inherit from its base...Ch. 10.1 - Look at the following code, which is the first...Ch. 10.1 - Briefly summarize the constructor issues in...Ch. 10.2 - Look at the following class definitions: class...Ch. 10.2 - Does the is a relationship work in reverse? Why or...Ch. 10.3 - What is the purpose of an abstract class?Ch. 10.3 - If a class is abstract, what cannot be done with...Ch. 10.3 - If a class is derived from a base class that has...
Ch. 10.3 - What must be done with an abstract property before...Ch. 10.3 - How can you create an abstract read-only property?Ch. 10 - When one object is a specialized version of...Ch. 10 - In an inheritance relationship, the_______ is the...Ch. 10 - In an inheritance relationship, the___________ is...Ch. 10 - Base classes are sometimes called____________. a....Ch. 10 - Derived classes are sometimes called______________...Ch. 10 - The refers to the base class. a. friend keyword b....Ch. 10 - Prob. 7MCCh. 10 - When a derived class method has the same name as a...Ch. 10 - The declares that a derived class is allowed to...Ch. 10 - The declares that this method overrides a method...Ch. 10 - A class that is not intended to be instantiated,...Ch. 10 - To declare a class as abstract, you use the...Ch. 10 - A regular, nonabstract class is sometimes called a...Ch. 10 - A(n) __________ is a method that appears in a base...Ch. 10 - A(n) __________ is a property that appears in a...Ch. 10 - __________ allows a base class reference variable...Ch. 10 - The base class inherits fields, properties, and...Ch. 10 - Polymorphism allows a class variable of the base...Ch. 10 - Properties in a base class cannot be overridden in...Ch. 10 - A base class reference variable can reference an...Ch. 10 - A statement that tries to use the new operator to...Ch. 10 - A class that is not intended to be instantiated,...Ch. 10 - When an abstract property appears in a class, it...Ch. 10 - What does a derived class inherit from its base...Ch. 10 - Look at the following code, which is the first...Ch. 10 - Can methods in the derived class directly access...Ch. 10 - When you create an instance of a derived class,...Ch. 10 - In what kind of situation would you want to use an...Ch. 10 - What is primary difference between an abstract...Ch. 10 - Can abstract classes also contain abstract...Ch. 10 - Write the first line of the definition for a...Ch. 10 - Look at the following class declarations: class...Ch. 10 - Write a parameterized constructor for a base class...Ch. 10 - Prob. 4AWCh. 10 - Create an abstract class called Star. Include an...Ch. 10 - Employee and ProductionWorker Classes Create an...Ch. 10 - ShiftSupervisor Class In a particular factory, a...Ch. 10 - TeamLeader Class In a particular factory, a team...Ch. 10 - Person and Customer Classes Design a class named...Ch. 10 - PreferredCustomer Class A retail store has a...
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