public boolean deleteEntry(BasicPoolEntry entry){
  final boolean found=freeEntries.remove(entry);
  if (found)   numEntries--;
  return found;
}

public boolean deleteEntry ( BasicPoolEntry entry ) { final boolean found = freeEntries . remove ( entry ) ; if ( found ) numEntries -- ; return found ; }
deletes an entry from this pool . only entries that are currently free in this pool can be deleted . allocated entries can not be deleted .
