Difference between abstract class and Interfaces in Java
- 9 Answers
- 17710 Views
- Nest, Persistent, Yantro Software, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / surendrareddy
abstract clas have both abstract methods and Concrete methods.
but interface have only abstract methods,
And also abstract class have construtor,but interface
doesn't have.
| Is This Answer Correct ? | 48 Yes | 9 No |
Answer / guest
abstract classes can have other concrete methods but
inteface only abstract methods.
| Is This Answer Correct ? | 35 Yes | 4 No |
Answer / manish sharma
Abstract classes Interfaces
Abstract classes are used only when there is a “is-a” type
of relationship between the classes. Interfaces can be
implemented by classes that are not related to one another.
You cannot extend more than one abstract class. You can
implement more than one interface.
Abstract class can implemented some methods also.
Interfaces can not implement methods.
With abstract classes, you are grabbing away each class’s
individuality. With Interfaces, you are merely extending
each class’s functionality.
| Is This Answer Correct ? | 24 Yes | 4 No |
Answer / your friend
abstract classes can have any type of medthods but
interface allows only abtract methods.
Interface is like a class not a class .
| Is This Answer Correct ? | 19 Yes | 8 No |
Answer / venkateswarlu dhaninkula
Interfaces consists of pure abstract methods
but not abstract class
abstract class having both abstract methods and non
abstract methods
interfaces declare all variables are final and public
but not abstract class
abstract class has a default constructor
but not interface
| Is This Answer Correct ? | 8 Yes | 1 No |
Answer / megha mokawat
Abstract class can have non-final variable aslo
but in interface variable are final by- default
| Is This Answer Correct ? | 8 Yes | 2 No |
Answer / narasimha raju
An abstract classes can have concrete methods and declares
abstract method which method can implement in different
ways. whereas in interface all are abstract methods.
in abstract class we can declare any type of variable
but in interface all are final variables.
| Is This Answer Correct ? | 8 Yes | 5 No |
Answer / krishna
In Abstract class should implementation methods information
with complete i.e Programmer duty .
But in Interfaces we can give implementations to End-User .
| Is This Answer Correct ? | 0 Yes | 0 No |
I HAVE DONE TESTING TOOLS COURSE,NOW I AM FRESHER,I AM NOT GETTING ANY CALLS,I WANT TO DO THE PROJECT ,WHERE I HAVE TO MEET TO DO THE PROJECT,I AM GOING WITH FAKE EXPERIENCE,SO WHAT I HAVE TO DO.
How to set on/off a group of indicators in a single statement?
can anyone please tell me the procedure for the NIC personal interview as i have been selected for the post of scientist/technical assistant B
what is the meaning of without standing arrears?
what are the topics choosen for jam round for interviews
In java without use of main() how to execute the program
What do you understand by modular programming?
differences between qtp10.0 and 11.0 ?
Write a program to implement BFS/ DFS routine in a connected graph
how many types of bytes are there???
What r the attributes using in Win Runner?
0 Answers Tavant Technologies,
how can we maintain the previous version scripts to new version.
0 Answers DST Global Solutions,
C 
