How to iterate through a Map in Java?

1.Iterate through the "EntrySet" like so:

 Public Static void Printmap (Map MP) {    = mp.entryset (). iterator ();      while (It.hasnext ()) {        = (map.entry) It.next ();         + "=" + Pair.getvalue ());         // avoids a concurrentmodificationexception     }}

2.If interested in the keys and you can iterate through the "KeySet ()" of the map:

map<string, object> map = ...;  for (String key:map.keySet ()) {    //  ...}

3.If need the values, use "value ()":

 for (Object value:map.values ()) {    //  ...}

4.Finally, if you want both the key and value, use "EntrySet ()":

 for (map.entry<string, object> entry:map.entrySet ()) {    = entry.getkey ();     = Entry.getvalue ();     //  ...}

Summary,if need only keys or values from the map, use method #2 or method #3. If you is stuck with older version of Java (less than 5) or planning to remove entries during iteration Method #1. Otherwise use Method #4.

How to iterate through a Map in Java?