public class Factorial {
    int sum(int n)
    {
        int sm=0;
        if(n==1)
            return 1;
        System.out.println("sm"+sm+"n"+n);
        sm=n+sum(n-1);
        System.out.println("sm"+sm);
        return sm;
    }
public static void main(String[] args){
    int n,s;
   System.out.println("Enter the limit:");
    n=3;
    s=new Factorial().sum(n);
    System.out.println("Sum of natural numbers %d"+s);
    //return 0;
}
}