Dear All
With the following code from the Sun's Java tutorial could someone explain
the line with the 'if' statement

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;
}
'Relatable' is an interface with method 'isLargerThan'. Why has obj1 in the
'if' statement in parenthesesthanks in advance