[sireesha]

Hi friends,
in the below code Relatable is the interface name.

Code:

public Object findLargest(Object object1, Object object2) {
   Relatable obj1 = (Relatable)object1;
   Relatable obj2 = (Relatable)object2;
   if ( (obj1).isLargerThan(obj2) > 0)
      return object1;
   else 
      return object2;
}

I read that we can use a reference type just like other datatypes.
Then how can we call a function using reference datatype variable like in the above code ?
and also they placed obj1 in the if condition in ().
what it indicates ?