7. Oop-Diff B/w Interfacse and abstract class.
- 3 Answers
- 4141 Views
- PCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / preetham
Abstract Class:
* It contains both abstract methods and normal methods
* We can not create an instance of abstract class
* we can inherit only one abstract class
Interface :
* It contains only abstract methods which has only signature does't have body
* We can not create an instance of interface.
* We can inherit multiple interfaces
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / swati
Abstract Class:-
In abstract class atleast one method is abstract compulsary.
You can define the method body for normal methods in
abstract class.
Interfaces:-
All methods are static abstract ,does't have body.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / pinki
Main difference is methods of a Java interface are
implicitly abstract and cannot have implementations. A Java
abstract class can have instance methods that implements a
default behavior.
Variables declared in a Java interface is by default
final. An abstract class may contain non-final variables.
Members of a Java interface are public by default. A
Java abstract class can have the usual flavors of class
members like private, protected, etc..
Java interface should be implemented using keyword
“implements”; A Java abstract class should be extended using
keyword “extends”.
An interface can extend another Java interface only, an
abstract class can extend another Java class and implement
multiple Java interfaces.
A Java class can implement multiple interfaces but it
can extend only one abstract class.
Interface is absolutely abstract and cannot be
instantiated; A Java abstract class also cannot be
instantiated, but can be invoked if a main() exists.
In comparison with java abstract classes, java
interfaces are slow as it requires extra indirection.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is CLR,MSIL and Jit Compiler and their roll in .net
What is the use of CLR in .NET?
what is the shortcutkey for solution explorer and add new item?
what are constructors and destructors
Explain cache memory? : Dot net architecture
Explain the purpose of cache? How is it used? : .NET Architecture
I can't be bothered with cas. Can I turn it off?
How resource files are used in .net?
how to minimize,maximize and restore my form programmatically?
1 Answers Interlac, Six Sigma,
If I'm developing an application that must accomodate multiple security levels though secure login and my ASP.NET web appplication is spanned across three web-servers (using round-robbin load balancing) what would be the best approach to maintain login-in state for the users?
Explain the number or character entered through keyboard gets converted to equivalent ascii code & it get stored on ram in the binary form. What is the exact procedure. : Dot net architecture
What is the purpose of cache? : Dot net architecture
Dot Net Framework 
