Answer / mansoor ul hassan

In abstract classes, its upto u to make methods abstract
but in interfaces, all methods are bydefault abstract.

Answer / sandeep pokala

Interface is a set of abstract methods,all the methods have
to be overridden by the class which ever implements the
interface.

Abstract class is collection of data and methods,which are
abstract. In abstact class some methods may contain
defination,but in interface every method should be abstract
( no definations in the methods)

Answer / hemalatha ivvala

Abstrat Class: It is a combination of Concrete Methods and
Abstract Methods.

Interface: Which class is only having abstract methods is
called interface.

Concrete Methods: Methods having declaration and definition

Abstrat Method: Methods having only declaration not having
any definition. Becuase abstract methods are used to provide
data abstractions(Means providing method definition and
hiding method declaration to provide security to the client).

Answer / swati

abstract class
1. abstract class have concrete methods ; interface have no
methods implemented.
2.interface do not come in inheriting chain; abstract class
come in inheriting chain.
3.in an interface no accessibility modifiers are allowed;
abstract class may have accessibility modifier

Answer / rt

In abstract class, there can be concrete methods. Whereas it's not the case with interfaces.

What is deep copy?

0 Answers  

visual basic 6.0 hava print statement for printing on form.what is the alternative for this in vb.net?

5 Answers  

How do you use two datareaders at the same time in a vb.net windows application ?

0 Answers  

when a program of vb.net is written in notepad it occupies always 1kb of memory why?

1 Answers  

Define manifest?

0 Answers  

Using VB, how can you change the Mouse Pointer?

0 Answers   CGI,

List the types of authentication?

0 Answers  

What is shadowing?

5 Answers   TCS,

Display a roll having minimum marks in two subjects?

1 Answers   Patni,

Explain the use of option explicit?

0 Answers  

Sir, what code to store data from vb net sql server 2008 to 2005 and at the same time in order to validate the data entered is not the same, but there have been contacts in the module. Examples such as the log table that I created, the user name as the primary key.

0 Answers   Infosys,

Explain the differences between vb.net and c#, related to oops concepts?

0 Answers