Java Program example on Factorial Using Recursion

Java Factorial Using Recursion Example
This Java example shows how to generate factorial of a given number using recursive function.

 
 import java.io.BufferedReader;  
 import java.io.IOException;  
 import java.io.InputStreamReader;  
 public class JavaFactorialUsingRecursion {  
     public static void main(String args[]) throws NumberFormatException, IOException{  
         System.out.println("Enter the number: ");  
         //get input from the user  
         BufferedReader br=new BufferedReader(new InputStreamReader(System.in));  
         int a = Integer.parseInt(br.readLine());  
         //call the recursive function to generate factorial  
         int result= fact(a);  
         System.out.println("Factorial of the number is: " + result);  
     }  
     static int fact(int b)  
     {  
         if(b <= 1)  
             //if the number is 1 then return 1  
             return 1;  
         else  
             //else call the same function with the value - 1  
             return b * fact(b-1);  
     }  
 }  
 

Output of this Java example would be
Enter the number: 5
Factorial of the number is: 120

Java Programming Exercise :

Tags:

• Previous Java Programming
• Next On Java Programming