public synchronized Boolean isChecked(V object){
  if (indexOf(object) == -1)   return null;
  return itemStatus.get(indexOf(object));
}

public synchronized Boolean isChecked ( V object ) { if ( indexOf ( object ) == - 1 ) return null ; return itemStatus . get ( indexOf ( object ) ) ; }
checks if a particular item is part of the check box list and returns a boolean value depending on the toggle state of the item .
