Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain Subclasses and Polymorphism ?
Car and Motorcycle are subclasses of MotorVehicle. If you instantiate a Car or a Motorcycle along with new, you can use in which object anywhere you can use a MotorVehicle, since cars are motor vehicles. As same you can use a Motorcycle anywhere you can use a MotorVehicle. This use of a subclass object in place of a superclass object is the starting of polymorphism. I'll say more about polymorphism later.
The converse is not true. While all cars are motor vehicles, not all motor vehicles are cars. A few are motorcycles. Thus if a method expects a Car object you shouldn't provides it a MotorVehicle object instead.
Remember that I said you shouldn't provide a method in which expects a Car a MotorVehicle. I didn't say you couldn't. Objects can be cast into their subclasses. This is useful while using data structures like Vectors that only handle generic objects. It's up to the programmer to remain track of what kind of object is stored in a Vector, and to use it accordingly.
The proper choice of classes and subclasses is a skill learned primarily by experience. There are often different ways to define classes.toString() as example of polymorphism
Explain term Literals in java? Literals are pieces of Java source code which mean exactly what they say. For example "Hello World!" is a String literal and its meaning is the w
What is PortableRemoteObject.narrow() method and what is used for? Ans) Java RMI-IIOP gives a mechanism to narrow the the Object you have received from from your
flags
i am to find 75% of i clicker score.Each correct answer is worth 2points and an incorrect 1point. Express grade as a percentage (i.e the max is 100%). e.g 1 no i clicker question
Develop a rfid based student attendance system include biometrics Project Description: The aim of our project is using rfid technology student attendance has to be taken. whe
I want Android App Notes Project Description: Seeking a developer to create a simple note application I don't need all the visualize features. I just want the user to t
Asynchronous control
API consumer -This application should consume a third party API -You should use more than just one method of the API, I'd like to see at least 3 or 4 -Have some concept
write a Java program that accept two integers and determine weather they are Coprime or not
In the previous assignments, we have developed an Asteroids game. In this assignment, we are going to use the same codebase to develop a different gameplay. The inspiration for thi
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd