TreeMap headMap() method in java
import java.util.SortedMap;
import java.util.TreeMap;
public class TreeMapHeadMapMethodExample
{
public static void main(String[] args)
{
TreeMap<String, Integer> tm = new TreeMap<String, Integer>();
// map string values to integer keys
tm.put("mango", 65);
tm.put("apple", 63);
tm.put("grapes", 35);
tm.put("pineapple", 60);
tm.put("banana", 26);
System.out.println("Given TreeMap is: " + tm);
// create SortedMap for map head
SortedMap<String, Integer> sm = new TreeMap<String, Integer>();
sm = tm.headMap("pineapple");
// Getting map head
System.out.println("headmap is: " + sm);
}
}