public SortedMap tailMap ( Object startKey ) { // Check for errors if ( comparator == null ) ( ( Comparable ) startKey ) . compareTo ( startKey ) ; else comparator . compare ( startKey , startKey ) ; return makeSubMap ( startKey , null ) ; }
Answers a SortedMap of the specified portion of this TreeMap which contains keys greater or equal to the start key . The returned SortedMap is backed by this TreeMap so changes to one are reflected by the other .