tailMap(K fromKey) method

tailMap(K fromKey): TailMap in Java returns key-value pairs of NavigableMap whose keys are greater than or equal to fromKey.
throws ClassCastException,  if specified key toKey is incompatible for TreeMap.
NullPointerException, if toKey is null and TreeMap uses natural ordering, or its comparator does not permit null keys. It returns null if TreeMap is empty.

 SortedMap<K,V> tailMap(K fromKey);

import java.util.TreeMap;
class ExampleOfTreeMap
{
	public static void main(String arg[])
	{
		TreeMap<Integer, String> listOfNames = new TreeMap<Integer, String>();
		listOfNames.put(3, "C");
		listOfNames.put(1, "A");
		listOfNames.put(2, "D");
		listOfNames.put(6, "B");
		listOfNames.put(8, "B");
		
		System.out.println("Map :"+listOfNames.tailMap(3));	
	}
}

Output: Map :{3=C, 6=B, 8=B}