Question { 5002 }

What is difference between Abstract Class and Interface?

Answer

Abstract class is a class in which it will contain both the
abstract and non-abstract methods.The abstract class must
be inheritable by another class. In vb.net it will be
defined using mustinheritable keyword.
The syntax is :
Public MustInheritable Class classname

Interface is a class in which it will contain only the
abstract methods. The interface can be implemented or not
by the another class.The functions in interface will be
implemented by the another class which implements the
interface.
The syntax is :
Public Interface interfacename

Question { GHK, 14736 }

What is difference between a panel and GroupBox ?

Answer

The working of panel and groupbox is same but the
difference is
1) In panel we can have the scroll bar but in groupbox we
will not have scroll bar
2) For panel we cannot provide the name or heading and for
the groupbox we can provide the name or heading