Create object android not final

I have a problem: well, I have this class:

class objectoA{
   int a;
   int b;

   objetoA(int tam, int long)
      {
         this.a=tam;
         this.b=long;
      }
}

Also , I have a Activity that have a Spinner, SeekBar, and button. I want to click to button and this botton catch the values of spinner and seekbar and put this into the objetoA constructor but I dont know do that because if I put the code into setOnClickListener eclipse show a error and If I put the code out the setOnClickListener , the object put default values. what have I do? Thanks you!!