Calling a method without parameters

[myklue]

Hi i'm having trouble calling my method in a class. I can't seem to use my tester user input and apply it to the class.

here is the code from the class:

  public int nextNumber()
      {
         if(count < 2)
         {
         	count++;
            return 1;
         }
         else
         {
            fnew = fold1 + fold2;
         
            fold2 = fold1;
            fold1 = fnew;
         
            return fnew;
         }
      }

and using the method nextNumber() how do I get the user's input to be applied in the method because it doesn't have parameters! I know theres a way I just can't figure it out! Thanks in advance!