public class factorialClass{
	public static int factorial (int n){
		int j; 
		int f; 
		f=1;
		for(j=1; j<=n; j=j+1) {
			f=f*j;
		}
		return f;
	}
	public static void main (String[] argv) {
		int x; 
		x=factorial(3); 
		System.out.println("3!="+x);
	}
}
/*

V:\my teaching.sync\2007.ph265.winter>javac factorialClass.java

V:\my teaching.sync\2007.ph265.winter>java factorialClass
3!=6

*/