Consider the three classes Alpha, Beta, and Gamma. Which of the following is/are true (choose all that apply)? a. Alpha is a subclass of Beta b. Beta is a subclass of Gamma c. Gamma is a superclass of Alpha d. Beta is a superclass of Alpha public class Alpha extends Gamma { public String getTwo() { return("2"); } public String getTwo(int i) { return("two"); } } public class Beta extends Gamma{ public String getThree() { return ("3"); } public String getFour() { return ("four"); } } public abstract class Gamma { public String getOne() { return ("1"); } public String getFour() { return("4"); }

Consider the three classes Alpha, Beta, and Gamma. Which of the following is/are true (choose all that apply)? a. Alpha is a subclass of Beta b. Beta is a subclass of Gamma c. Gamma is a superclass of Alpha d. Beta is a superclass of Alpha public class Alpha extends Gamma { public String getTwo() { return("2"); } public String getTwo(int i) { return("two"); } } public class Beta extends Gamma{ public String getThree() { return ("3"); } public String getFour() { return ("four"); } } public abstract class Gamma { public String getOne() { return ("1"); } public String getFour() { return("4"); }

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 20RQ

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•Person Class: Person class has attributes: String name, address and int age. Write setperson() function to set values and getPerson() to Print attributes. Also write appropriate constructors. •Employee Class: Write another class Employee having attributes department and salary of type string and double. Write methods setEmployee(), getEmployee() and appropriate constructors for Employee class. •Student Class: •Write a class Student having attributes registration number and GPA of type string and float. Also write setStudent(), getStudent() methods and required constructors. Use the concept of inheritance to achieve the above functionality. Write a main() function to display the information of employee and student. • Note: Call the constructors/methods of parent class in child class where required
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public class MyGenClass { private T1 name; private T2 stulD; private T3 CGPA; public void setStuData( ){ I/ parameters name = n; stulD = d: CGPA = g; } public void printAsString() { System.out.println( } ); I/ print all information as string public static void main(String args||) { Il Create an object stu by parameters String, Integer, Double Il Call setStuData() with any values you like /l Call printAsString() } }
(1) Extend the ItemToPurchase class to contain a new attribute. item_description (string) - Set to "none" in default constructor Implement the following method for the ItemToPurchase class. print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter. Ex. of print_item_description() output: Bottled Water: Deer Park, 12 oz. (2) Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps. Parameterized constructor which takes the customer name and date as parameters Attributes customer_name (string) - Initialized in default constructor to "none" current_date (string) - Initialized in default constructor to "January 1, 2016" cart_items (list) Methods add_item() Adds an item to cart_items list. Has parameter ItemToPurchase. Does not return anything. remove_item() Removes item from cart_items list.…
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