What is an Exception?

Definition:

“When an unusual, irregular, abnormal or nonstandard condition arises in a sequence of code at run time this phenomenon is referred as Exception handling”

An exception is a runtime error.

In Object Oriented, an exception is an object that is used to describes an exceptional condition that has occurred in a piece of code.

Sometimes we have to design those pages which have different color schemes but it is very difficult to maintain these types of pages. We can overcome from this situation by using skins and themes. This makes these things easier. 1). First create a Master Page having the following components. * One Content Placeholder 2).Create another page (default.aspx) and select the Master Page

Definition:

In java programming language, an interface is an abstract, conceptual or concrete type that is used to specify an interface.

How to use an interface:

• By using the key word interface, we can fully abstract a class interface from its implementation.

It means that, using interface, we can specify what a class must do, but not how it does it.

What is inheritance?

Inheritance is a process which allows inheriting the methods and properties of parent or super class.

OR

Deriving an object from an existing class (super class)

Class

In Object Oriented programming, “class is a blue print that is used to create objects”
A class is a collection of things that share common attributes like class of students.

Some characteristic of a class