When should i use abstract classes and interfaces, JAVA Programming

Assignment Help:

When should I use abstract classes and when should I use interfaces?

Use Interface, when:

Design changing often or when various implementations only share method signatures.
When we need some classes to use some methods which we don't want to be included in class.

Use Abstract Class, when:

Several implementations are of the same kind and use common behavior.
Enabling with generalized form of abstraction and leave implementation task with inheriting subclass.
creating planned inheritance hierarchies

Related Discussions:- When should i use abstract classes and interfaces

Activity diagram, The statechart diagrams and activity diagram are related ...

The statechart diagrams and activity diagram are related in a sense that statechart diagram refers on object undergoing a transition process and an activity diagram refers on the f

Describe general approaches to solve statelessness problem, Problem : (...

Problem : (a) One problem encountered when designing web applications is that HTTP is a "stateless" protocol. Describe two general approaches to solve the statelessness probl

What is the use of lookupdispatchaction, LookupDispatchAction is useful if ...

LookupDispatchAction is useful if the method name in the Action is not driven by its name in the front end, but by the Locale independent key into the resource bundle. As the key i

Create objects of student class by calling default, Create objects of stude...

Create objects of student class by calling default Create objects of student class by calling default, parameterize and copy constructor Call student class different methods on

Assignment help, need java help[

need java help[

Define the key weakness of the web, Define the key weakness of the web? ...

Define the key weakness of the web? the key weakness of the web is Initially web was designed only for humans to read not for computers to understand it.

Write a quality and complexity analysis report, Write a quality and complex...

Write a quality and complexity analysis report, JAVA Programming

Why local variable is preferred over global variable, Why Local variable is...

Why Local variable is preferred over Global variable ? In my point of view Global variable has a few advantage along with Local variables is preferred because of the subsequent

Explain role of actionservlet , ActionServlet performs the role of Contro...

ActionServlet performs the role of Controller: ? Process user requests ? Verify what the user is trying to achieve according to the request ? Pull data from the model (if

Program for randomly generated 3- digit number matches, Program for Randoml...

Program for Randomly Generated 3- Digit Number Matches This assignment demonstrates your ability to use basic Java syntax including selection and looping statements. You will

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages