import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

/*

* Author: Edwin Torres

* email: CoachEd@gmail.com

*

* This example shows different ways to iterate through a HashMap

*/

public class HashmapIterateEx {

public static void main(String[] args) {

/** create a HashMap and populate it with some values */

HashMap<String,String> hm = new HashMap<String,String>();

hm.put("Carmelo","New York Knicks");

hm.put("Dwight","Houston Rockets");

hm.put("Kobe","Los Angeles Lakers");

hm.put("Derrick","Chicago Bulls");

String key, val;

/** for each method */

for (Map.Entry<String,String> entry : hm.entrySet()) {

key = entry.getKey();

val = entry.getValue();

System.out.println(key + " , " + val);

}

System.out.println();

/** iterate over keys */

Iterator<String> iter1 = hm.keySet().iterator();

while (iter1.hasNext()) {

key = iter1.next();

val = hm.get(key);

System.out.println(key + " , " + val);

}

System.out.println();

/** iterate over values */

Map.Entry<String,String> entry;

Iterator<Map.Entry<String,String>> iter2 = hm.entrySet().iterator();

while (iter2.hasNext()) {

entry = iter2.next();

key = entry.getKey();

val = entry.getValue();

System.out.println(key + " , " + val);

}

System.out.println();

}

}