Java Program to generate Fibonacci series

//Program to generate Fibonacci series
import java.util.*;
class fibonacci
     {
   public static void main(String args[])
      {
    int f1=1,f2=1,f3,n,i;
    System.out.print("Enter how many numbers you want to generate in the series : "); 
    Scanner obj = new Scanner(System.in);
    n=obj.nextInt();
    if(n==1)
      System.out.println(f1);
    else if(n==2)
       System.out.println(f1+" "+f2);
    else if(n>=3)
         {
        System.out.print(f1+" "+f2);
        for(i=3;i<=n;i++)
            {
            f3=f1+f2;
            f1=f2;
            f2=f3;
                System.out.print(" "+f3);
            }
         }
        }
      }
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Java Program to generate nth term in Fibonacci series