Abstraction - Revision history

Admin at 03:28, 11 February 2020

2020-02-11T03:28:36Z

Admin at 06:26, 5 January 2020

2020-01-05T06:26:35Z

Admin: Created page with "'''Abstraction''' is the process representing essential features without including background details, to reduce the complexity for the users. Abstraction can be achieved with..."

2020-01-05T06:25:21Z

Created page with "'''Abstraction''' is the process representing essential features without including background details, to reduce the complexity for the users. Abstraction can be achieved with..."

New page

'''Abstraction''' is the process representing essential features without including background details, to reduce the complexity for the users. Abstraction can be achieved with either abstract classes or interfaces.

== Abstract class & Abstract method ==
'''Abstract''' keyword is used with classes and methods:

* '''Abstract class''' is a restricted class that cannot be used to create objects. To access it, it must be inherited from another class.
* '''Abstract method''' can only be used in an abstract class, and it does not have a body. The body is provided by the derived class.

abstract class Software
{
// Abstract method (does not have a body)
public abstract void addIcon();
// Regular method
public void defaltPath()
{
Console.WriteLine("c:");
}
}
// Derived class (inherit from Software)
class WinZip : Software
{
public override void addIcon()
{
// The body of addIcon() is provided here
Console.WriteLine("Desktop");
}
}
class Program
{
static void Main(string[] args)
{
WinZip myWinZip = new WinZip(); // Create a WinZip object
myWinZip.defaltPath(); // Call the abstract method
myWinZip.addIcon(); // Call the regular method
}
}

== Interface ==
An interface is a completely "abstract class", which can only contain abstract methods and properties (with empty bodies). Interface is another way to achieve abstraction in C#.

interface Software
{
// Abstract method (does not have a body)
void addIcon();
// Regular method
void defaltPath();
}
// Derived class (inherit from Software)
class WinZip : Software
{
public void addIcon()
{
// The body of addIcon() is provided here
Console.WriteLine("Desktop");
}
public void defaltPath()
{
Console.WriteLine("c:");
}
}
class Program
{
static void Main(string[] args)
{
WinZip myWinZip = new WinZip(); // Create a WinZip object
myWinZip.defaltPath(); // Call the abstract method
myWinZip.addIcon(); // Call the regular method
}
}

@@ Line 42: / Line 42: @@
          // Abstract method (does not have a body)
          void addIcon();
-         // Regular method
+         // Abstract method (does not have a body)
          void defaltPath();
+     }
@@ Line 55: / Line 55: @@
          public void defaltPath()
+         {
              Console.WriteLine("c:");
+         }
@@ Line 63: / Line 64: @@
+         {
              WinZip myWinZip = new WinZip(); // Create a WinZip object
-             myWinZip.defaltPath();  // Call the abstract method
+             myWinZip.defaltPath();  // Call the regular method
              myWinZip.addIcon();  // Call the regular method
+         }
+     }

@@ Line 1: / Line 1: @@
 '''Abstraction''' is the process representing essential features without including background details, to reduce the complexity for the users. Abstraction can be achieved with either abstract classes or interfaces.
 == Abstract class & Abstract method ==
 '''Abstract''' keyword is used with classes and methods: