Java – SortedMap Example

import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;

public class SortedMapExample {

    public static void main(String[] args) {

        SortedMap<Integer,String> sm=new TreeMap<Integer, String>();

        sm.put(new Integer(2), "Two");
        sm.put(new Integer(1), "One");
        sm.put(new Integer(4), "Four");
        sm.put(new Integer(3), "Three");
        sm.put(new Integer(5), "Five");

        Set s=sm.entrySet();

        // Using iterator in SortedMap 
        Iterator i=s.iterator();

        while(i.hasNext())
        {
            Map.Entry m =(Map.Entry)i.next();

            int key = (Integer)m.getKey();
            String value=(String)m.getValue();

            System.out.println("Key :"+key+"  value :"+value);
        }
    }
}

Key :1 value :One
Key :2 value :Two
Key :3 value :Three
Key :4 value :Four
Key :5 value :Five