Factorial of any number in Java

 

Factorial of any number

Factorial of any number is the product of an integer and all the integers below it for example factorial of 4 is 4! = 4 * 3 * 2 * 1 = 24.

Example

import java.util.Scanner;

class Factorial

{

           public static void main(String[] args)

           {

    int no, fect=1;

           Scanner s=new Scanner(System.in);

    System.out.println("Enter any number :");

           no=s.nextInt();

    for(int i=1; i<=no; i++)

           {

           fect=fect*i;

           }

           System.out.println("Factorial is :" +fect);

           }

}

Output

Enter any number :

6

Factorial is :

720

Syntax to compile and run java program

Syntax

for compile -> c:/>javac Factorial.java

for run -> c:/>java Factorial

Explnation of Code

·         Scanner s=new Scanner(System.in): are used for receive input from keyboard.

·         nextInt(): method are used for get integer type value from keyboard.

·         System.out.println("....."): are used for display message on screen or console.