Java Collection Tutorial - Java TreeMap.subMap(K fromKey, K toKey)


TreeMap.subMap(K fromKey, K toKey) has the following syntax.

public SortedMap <K , V> subMap(K fromKey,   K toKey)


In the following code shows how to use TreeMap.subMap(K fromKey, K toKey) method.

/*from  w w  w.  j a v  a 2 s . c  om*/

import java.util.SortedMap;
import java.util.TreeMap;

public class Main {
   public static void main(String[] args) {
      TreeMap<Integer, String>  treemap = new TreeMap<Integer, String> ();
      // populating tree map
      treemap.put(2, "two");
      treemap.put(1, "one");
      treemap.put(3, "three");
      treemap.put(6, "six");
      treemap.put(5, "from");      
      System.out.println("Getting a portion of the map");
      SortedMap<Integer, String>  treemapincl=treemap.subMap(1,5);
      System.out.println("Sub map values: "+treemapincl);      

The code above generates the following result.