Java Collection Tutorial - Java TreeMap.entrySet()


TreeMap.entrySet() has the following syntax.

public Set <Map.Entry <K, V>> entrySet()


In the following code shows how to use TreeMap.entrySet() method.

import java.util.Set;
import java.util.TreeMap;
/*from  w ww  . j a  va  2s .  c o  m*/
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");
      // putting values in set
      Set mapset=treemap.entrySet();
      System.out.println("Checking value");
      System.out.println("Entry set values: "+mapset);

The code above generates the following result.