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
Test Driven Development (TDD) TDD process gives your confidence in the delivered code for the following things. 1. TDD can remove duplication of code and also disciplines t
Luminous Jewels - The Polishing Game Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various lum
do you have example of a simple midlet game ?
Why hub is used in networks? Hub is networking equipment and a device that connects various computers to form a network. In a network the NIC translates the message within elec
What is difference between object state and behavior? Ans) If you change the state of an object, you ask it to perform a behavior. An object kept its states in a field e.g. vari
Write a program to add of doubles in java? Doubles are treated much the similar way, but now you obtain to use decimal points in the numbers. This is a same program which does
program t ofind area under the curve y=f(x) between x=a and x=b integrate y=f(x) between the limits a and b
Project Description: Develop an android service app that will run on the background. The app has to get the users location (longitude and latitude) every 5 minutes or when th
Write a program to proove that HashSet maintains random order
Hi, I have an android sdk assignment which is due monday night. The user will enter the following information. url address www.google.com user name [email protected] password 12
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