Suppose you want to have a Tractor class that implements the Comparableinterface so that you can compare Tractor objects with other Tractor objects.Which of the following would be the best class declaration for the Tractor class?public class Tractor implements Comparablepublic class Tractor extends Comparable< Tractor>public class Tractor implements Comparablepublic class Tractor extends Comparablepublic class Comparable implements Tractor^PDF CamScanner 04-26....pdfPDF CamScanner 04-26....pdfMHCamScanner 04-26....pdf

In java if we inherit interface then use this syntax public class class_name implements…

Suppose you want to have a Tractor class that implements the Comparable interface so that you can compare Tractor objects with other Tractor objects. Which of the following would be the best class declaration for the Tractor class?

Suppose you want to have a Tractor class that implements the Comparable interface so that you can compare Tractor objects with other Tractor objects. Which of the following would be the best class declaration for the Tractor class?

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

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Hi, I am making a elevator simulation and I need help in making the passenger classes using polymorphism. Any help is appreciated. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. This is what I have so far // Passenger abstract classpublic abstract class Passenger { protected String type; protected int requestPercentage; public…
In what kind of situation would you want to use an abstract class instead of a base class?
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