Question 3:1. Explain the importance of method signature in method overriding.2. The system might want to use an overridden method (function) with a common signature across therelevant classes Seller, Dealer, Buyer, and distinct classes Car and Invoice for maintaining thefinances. Details of the classes can be seen in Table 1. Explain with proper syntax as to how this canbe achieved using object-oriented programming.3. Write Java code (for the methods only) that implements the method with the same signature for eachclass with the following details:a. Calculates the commission earned by the dealer. A dealer charges 1% commission eachto the buyer and seller on sale price of the car.b. The profit or loss for the seller. A seller earns profit (incurs loss) computed as thedifference between the sale and purchase price of the car. Sales Tax is deducted at therate of 17% on the profit earned. No sales tax is charged in case of loss. The methodshould display an appropriate message accordingly.c. The total amount paid by the buyer. Table 1:ClassAttributesname, registration number, engine number, chassis number, city of registratmake and model, color, the date of the registration, price, the date of arrival ofcar to the dealership, type of the vehicle, and whether the car is sold or not.dealer's name, dealer's id, dealer's address, and the dealer's phone number.dealer object also keeps track of the cars that the dealer has.A person has a name, address, phone number and e-mail address.CarDealerPerson Question 3:1. Explain the importance of method signature in method overriding.2. The system might want to use an overridden method (function) with a common signature across therelevant classes Seller, Dealer, Buyer, and distinct classes Car and Invoice for maintaining thefinances. Details of the classes can be seen in Table 1. Explain with proper syntax as to how this canbe achieved using object-oriented programming.3. Write Java code (for the methods only) that implements the method with the same signature for eachclass with the following details:a. Calculates the commission earned by the dealer. A dealer charges 1% commission eachto the buyer and seller on sale price of the car.b. The profit or loss for the seller. A seller earns profit (incurs loss) computed as thedifference between the sale and purchase price of the car. Sales Tax is deducted at therate of 17% on the profit earned. No sales tax is charged in case of loss. The methodshould display an appropriate message accordingly.c. The total amount paid by the buyer.

Method Signature In Java, a method signature is essential for the strategy presentation. It's the…

Answered: Question 3: 1. Explain the importance…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Concept explainers

Question

Question 3:
1. Explain the importance of method signature in method overriding.
2. The system might want to use an overridden method (function) with a common signature across the
relevant classes Seller, Dealer, Buyer, and distinct classes Car and Invoice for maintaining the
finances. Details of the classes can be seen in Table 1. Explain with proper syntax as to how this can
be achieved using object-oriented programming.
3. Write Java code (for the methods only) that implements the method with the same signature for each
class with the following details:
a. Calculates the commission earned by the dealer. A dealer charges 1% commission each
to the buyer and seller on sale price of the car.
b. The profit or loss for the seller. A seller earns profit (incurs loss) computed as the
difference between the sale and purchase price of the car. Sales Tax is deducted at the
rate of 17% on the profit earned. No sales tax is charged in case of loss. The method
should display an appropriate message accordingly.
c. The total amount paid by the buyer.

Table 1:
Class
Attributes
name, registration number, engine number, chassis number, city of registrat
make and model, color, the date of the registration, price, the date of arrival of
car to the dealership, type of the vehicle, and whether the car is sold or not.
dealer's name, dealer's id, dealer's address, and the dealer's phone number.
dealer object also keeps track of the cars that the dealer has.
A person has a name, address, phone number and e-mail address.
Car
Dealer
Person

Expert Solution

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions