public class CanDo implements Doable
{
   public void doThis ()
   {
      // whatever
   }

   public int doThat ()
   {
      // whatever
		return 0;
   }
	
   public void doThis2 (float value, char ch)
	{
	}
	
   public boolean doTheOther (int num)
	{
		return true;
	}
}