Java Factorial Program

import java.util.Scanner;

class Factorial
{
public static void main(String args[])
{
int n, c, f = 1;
System.out.println("Enter an integer to calculate its factorial");
Scanner in = new Scanner(System.in);
n = in.nextInt();

if (n < 0)
System.out.println("Number should be non-negative.");
else
{
for (c = 1; c <= n; c++)
f = f*c;
System.out.println("Factorial of "+n+" is = "+f);

}
}
}

Output:

Enter an integer to calculate its factorial

5

Factorial of 5 is = 120