Java Collection Tutorial - Java HashMap.entrySet()


HashMap.entrySet() has the following syntax.

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


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

/*w  w w. j av  a 2 s .c o m*/

import java.util.HashMap;
import java.util.Set;

public class Main {
   public static void main(String args[]) {
      HashMap<Integer, String> newmap = new HashMap<Integer, String>();      
      newmap.put(1, "tutorials");
      newmap.put(2, "from");
      newmap.put(3, "");
      // create set view for the map
      Set set=newmap.entrySet();
      // check set values
      System.out.println("Set values: " + set);

The code above generates the following result.