Compare an abstract class and an interface , JAVA Programming

Assignment Help:

You want the base class to represent only an interface for its derived classes. That means, you don't want anyone to actually instantiate an object of the parent class. You only want to upcast to it so that its interface may be used. This is accomplished by building that class abstract using the abstract keyword. If anyone tries to build an object of an abstract class, the compiler saves it.

 

The interface keyword makes this concept of an abstract class a step further by preventing any function or method implementation at all. You can only define a method or function but not give the implementation. The class, which is adding the interface, should give the actual implementation. The interface is a commonly and very useful used aspect in OO design, as it gives the implementation and separation of interface and actives you to:

 

1. Use similarities among unrelated classes without artificially forcing a class relationship.

2. Define methods that one or more classes are expected to implement.

3.  Reveal an object's programming interface without revealing its basic implementation.

4. Model multilevel interface inheritance in Java, which gives some of the benefits of full on multiple inheritances, a feature that some object-oriented languages support that allow a class to have more than one parented class.

 

 

155_Untitled.png


Related Discussions:- Compare an abstract class and an interface

Android app for evaluating of distance, Android app for evaluating of dista...

Android app for evaluating of distance Project Description: The request is to prepare an app for Android. The application needs to run on tablet (7 "or larger) and the layout

File and random access file classes, Difference between the File and Random...

Difference between the File and Random Access File classes? Ans) The File class encapsulates the files and directories of the local file system. The Random Access File class giv

Difference between object declaration and object creation, Question: (a...

Question: (a) (i) Describe the purpose of comments when writing programs in Java. (ii) Name the types of comments available and illustrate with simple examples. (b) (i)

Area Under Curve, #include float start_point, /* GLOB...

#include float start_point, /* GLOBAL VARIABLES */ end_point, total_area; int numtraps; main( ) { void input( void );

Java remote method invocation (RMI) architecture, Java Remote Method Invoca...

Java Remote Method Invocation (RMI): It gives a way for a Java program on one machine to interact with objects residing in different JVMs. The important blocks of the RMI arc

How can you define a readable program, How can you define a readable progra...

How can you define a readable program? A program that is easy to read & understand also easy to maintain and enhance. Readability is the ease in that text can be read and under

How instant messaging works explain their process, How instant messaging wo...

How instant messaging works? Write the steps involved in this process? The Instant Messaging services available permit us to manage a list of people (contacts) that we interact

Illustrate an example to define a student class, Task - Defining a Student ...

Task - Defining a Student class The below illustration will explain how to write a class. We want to write a "Student" class which - should be able to store the below charac

Applet, how to create a face with nose using applet

how to create a face with nose using applet

List down the names of two array techniques available java, List down the n...

List down the names of two array techniques available in JavaScript. The two techniques thata rae available in java script is: 1. sort( ) [sorts elements within alphabetical

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd