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Java program to print factorial using recursion

YASH PAL, 31 July 2024

In this tutorial, we are going to write a Java program to print factorial of a given number in Java Programming with practical program code and step-by-step full complete explanation.

Java program to print factorial of a given number

Java program to print factorial of a given number using recursion.

 
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(newInputStreamReader(System.in));
 		int a = Integer.parseInt(br.readLine());
		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

 
Enter the number: 
5
Factorial of the number is: 120
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