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!
The 'is a' relationship is used with inheritance and 'has a' relationship is used with composition. Both composition and inheritance allow you to perform sub-objects inside your new class. Two of the main techniques for code reuse are object composition and class inheritance.
Inheritance is single-directional. For example man is a human. But human is not a man. Inheritance needs extends key word. Composition: is used when Man has an eye. It is incorrect to say man is an eye. Composition simply defines using instance variables that refer to other objects. The class man will have an instance variable, which refers to an eye object.
Which one to favor, inheritance or composition? The guide is that inheritance could be only used when subclass 'is a' superclass.
1. Don't use inheritance just to get programming code reuse. If there is no 'is a' relationship then require composition for code reuse. Overuse of implementation inheritance will divide all the subclasses, if the superclass is changed.
2. Do not add inheritance just to get polymorphism. If there is no 'is a' relationship and all you need is polymorphism then use interface inheritance with composition, which provides you code reuse.
State the Java Programmer Efficiency Faster Development Building an application in Java takes about 50% less time than in C or C++. So, faster time to market Java is said to
I need help setting up and fleshing out a basic outline/structure for a basic Java web app using an MVC pattern
Explain The java.net package Each package describes a number of classes, interfaces, exceptions, and errors. For instance, the java.net package contains these, classes, interfa
The hashCode() and equals() methods have to be very important, when objects implementing these two functions are added to collections. If not implemented or implemented incorre
Employee application Project Description: Subsequent Technology should be used 1) UI (jsp, jstl ,html, etc) 2) Framework (Spring MVC and hibernate) 3) Database (MYSQ
Project Description: Give a script that will produce a pop-under on a mobile landing page -We can host our own landing page and we will want to change the destination URL for
Given the following XHTML page: Create an embedded JavaScript function named getUserInfo that prompts the user with the following two questions after the XHTML page has loa
The design of the website will be left to the individual student. The website must be written only in xml, displayed in xhtml using transforms and xsl for styling elements. Javascr
How can we define a computer screen? A computer screen is define as use to display output of computer to the user. Computer screen is consists of pixels.
can we develop paint user can draw his charcters and images in swing
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