Factorial.java

public class Factorial{
	public static void main(String[] args){
 if(args.length != 1){
 System.out.println("Usage: Factorial <number>");
 return;
 }

 int total = 1;
 int fact = Integer.parseInt(args[0]);
 for(int i=1; i<=fact; i++){
 	if(fact == 0){
 		total = 1;
 	}
 	else{
 		total*= i;
 	}
 }
 System.out.println("Jumlah factorial adalah: " + total);
	}
}