HashMap< String, String> map = new HashMap< String, String>();
map.put(“Key1”, "Value1");
map.put(“Key2”, " Value2");
map.put(“Key3”, " Value3");

Set set = hmap.entrySet();
Iterator iterator = set.iterator();

// Iterate over HashMap
while(iterator.hasNext()) {
    Map.Entry mEntry = (Map.Entry)iterator.next();
    String key = mEntry.getKey();
    String value = mEntry.getValue();
}