To get a set of Map.Entry elements back from a HashMap: public Set entrySet() : HashMap « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. HashMap

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

public class MainClass {
  public static void main(String[] a) {

    Map map = new HashMap();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    Set set = map.entrySet();

    Iterator iter = set.iterator();

    while (iter.hasNext()) {
      Map.Entry entry = (Map.Entry) iter.next();
      System.out.println(entry.getKey() + " -- " + entry.getValue());
    }
  }
}

key1 -- value1
key3 -- value3
key2 -- value2