Java Factorial Program

class FactorialExampleProg{

public static void main(String args[]){
  int j,f=1;
  int num=5;//Number for which we want to calculate factorial  
  for(j=1;j<=num;j++){  
      f=f*j;  
  }  
  System.out.println("Factorial of "+num+" is: "+f);  
 }
}