Tree maps with dates

Main.java

import java.util.*;
import java.text.*;

public class TreeMapDemo {
   public static void main(String[] args) {

      // creating maps 
      TreeMap<Date, String> treemap = new TreeMap<Date, String>();
      SortedMap<Date, String> treemaphead = new TreeMap<Date, String>();
      SortedMap<Date, String> treemaptail = new TreeMap<Date, String>();
      
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
      // populating tree map
      try {
      treemap.put(sdf.parse("2000/12/14"), "one");
      treemap.put(sdf.parse("2004/12/14"), "two");
      treemap.put(sdf.parse("2009/12/14"), "three");
      treemap.put(sdf.parse("2012/12/14"), "four");
      treemap.put(sdf.parse("2023/12/14"), "five");
      treemap.put(sdf.parse("2033/12/14"), "six");
      } catch(ParseException e) {
          
      }
      
      Date now = new Date();

      System.out.println("now: " + now.toString() + "\r\n");
      // getting head map
      treemaphead = treemap.headMap(now);
      System.out.println("head: \r\n");
      for(Object object : treemaphead.keySet()){
          System.out.print(treemaphead.get(object) + "\r\n");
          System.out.println(object.toString());
      }
      
      // getting tail map
      treemaptail = treemap.tailMap(now);
      System.out.println("\rtail: \r\n");
      for(Object object : treemaptail.keySet()){
          System.out.print(treemaptail.get(object) + "\r\n");
          System.out.println(object.toString());
      }
   }    
}