What is Sealed Class?
Apr 9, 2022
Answers (2)
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Sealed classes are used to restrict the users from inheriting the class. A class can be sealed by using the sealed keyword.
Once a class is defined as a sealed class, this class cannot be inherited.
A method can also declared as sealed in that case it can not be override.
Example:
using System;
sealed class SealedClass {
public int Multiply(int a, int b)
{
return a * b;
}
}
class Program {
static void Main(string[] args)
{
SealedClass slc = new SealedClass();
int total = slc.Multiply(10, 15);
Console.WriteLine("Total = " + total.ToString());
}
}
Output: Total = 150
A Sealed class is a class that cannot be inherited and used to restrict the properties.
The following are some key points:
- A Sealed class is created using the sealed keyword.
- Access modifiers are not applied to a sealed class.
- To access the sealed members, we must create an object of the class.
Example
using System;
sealed class SealedClass {
// Calling Function
public int Addition(int a, int b)
{
return a + b;
}
}
class Program {
static void Main(string[] args)
{
// Creating an object of Sealed Class
SealedClass slc = new SealedClass();
// Performing Addition operation
int total = slc.Addition(5, 5);
Console.WriteLine("Total = " + total.ToString());
}
}
- You can inherit the sealed class it gives an error.
using System;
// Creating a sealed class
sealed class SealedClass {
}
// Inheriting the Sealed Class
class Example : SealedClass {
}
// Driver Class
class Program {
// Main Method
static void Main()
{
}
}
It gives an error
