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
How to design an ogive program in java?
Struts is depend on model 2 MVC (Model-View-Controller) architecture. Struts controller uses the command design pattern and the action classes use the adapter design pattern. The p
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
I want Selenium Based Test Automation for Java Based Web Application Project Description: I want some test cases to be automated to login to UI which is Java based web applic
Development of an Android app urgent Project Description: I am searching for some good android developer who has depth in knowledge of making an app. I am focusing on a certa
This module is gives the fundamental functionality of the spring framework. In this module BeanFactory is the heart of any spring-based application. The whole framework was built o
Execution Process of Java bytecode JVM are available for almost every operating system. Java bytecode is executed by employing any operating system's JVM. Hence achieve port
Using the above thread program, now create 20 threads in your program and run them. No need to wait for the keyboard in each thread, just print "Hello" and its thread id in each t
There is a pebble merchant. He sells the pebbles, that are used for shining the floor. His main duty is to take the length of the room’s sides. But he sometimes mistakes doing tha
a client server calculator in java
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