hi i want to sort map according to its key value plz see code below

public static void main(String[] args) {

    SortedMap map = new TreeMap();

    // Add some elements:
    map.put("2", "Two");
    map.put("1", "One");
    map.put("5", "Five");
    map.put("4", "Four");
    map.put("3", "Three");
    map.put("10", "Ten");
    map.put("12", "Twelve");
    map.put("7", "Seven");
    map.put("9", "Nine");

    Iterator iterator = map.keySet().iterator();
    while (iterator.hasNext()) {
        Object key = iterator.next();
        System.out.println("key : " + key + " value :" + map.get(key));
    }


}

 Result Should come below

key : 1 value :One
key : 2 value :Two
key : 3 value :Three
key : 4 value :Four
key : 5 value :Five
key : 7 value :Seven
key : 9 value :Nine
key : 10 value :Ten
key : 12 value :Twelve