Difference between abstract class and Interfaces in Java
- 9 Answers
- 17750 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 |
what is technical system, business system, logical system in sap pi7.0
iam confused among testing ,.net and java. can anybody help me.
major characteristics of software system
what will we require to build project with the help of oracle
What is meant by SQL,PL/SQL,SQL PLUS? Is there any differnece between them?
I need to fetch all rows from the table based one field value in the table and later do a condition check if the condition is true I will have to move all the rows present in the data base to output file one else if the condition is not satisfied then move all the records of that field value into another file .Please let me know how to do that
can any one suggestion me present which course(except java,.net) has huge demand in the market?
How Many versions are there in crystal reports
what is class module in vb6? what it's use? with example..
how to generate dsnless connectivity in j2ee
hai i like to do some certifications in programming or any other......... am doing my IT third year......... pls guide me...... mail me ur suggestions to ranjithmaharaj@gmail.com...
___ method used to move a recordset pointer in nth position in DAG.
C 
