import java.util.*;

public class jCollectTreeMap {
  public static void main(String[] args)  
  {
   System.out.println("Tree Map Example!\n");
   TreeMap <Integer, String>tMap = new TreeMap<Integer, String>();

   //Addding data to a tree map
   tMap.put(1, "Sunday");
   tMap.put(2, "Monday");
   tMap.put(3, "Tuesday");
   tMap.put(4, "Wednesday");
   tMap.put(5, "Thursday");
   tMap.put(6, "Friday");
   tMap.put(7, "Saturday");

   //Rerieving all keys
   System.out.println("Keys of tree map: " + tMap.keySet());
   //Rerieving all values
   System.out.println("Values of tree map: " + tMap.values());

   //Rerieving the value from key with key number 5
   System.out.println("Key: 5 value: " + tMap.get(5)+ "\n");
   //Rerieving the First key and its value
   System.out.println("First key: " + tMap.firstKey() + " Value: "  
   + tMap.get(tMap.firstKey()) + "\n");
   //Rerieving the Last key and value
   System.out.println("Last key: " + tMap.lastKey() + " Value: "  
   + tMap.get(tMap.lastKey()) + "\n");

   //Removing the first key and value
   System.out.println("Removing first data: "  
   + tMap.remove(tMap.firstKey()));
   System.out.println("Now the tree map Keys: " + tMap.keySet());
   System.out.println("Now the tree map contain: "  
   + tMap.values() + "\n");
   //Removing the last key and value
   System.out.println("Removing last data: "  
   + tMap.remove(tMap.lastKey()));
   System.out.println("Now the tree map Keys: " + tMap.keySet());
   System.out.println("Now the tree map contain: " + tMap.values());
  }
}

// HashMap sample

import java.awt.Point;
import java.util.*;

public class MapExample
{
  public static void main(String arg[])
//    public static void main(String args[])
  {
   String[] args = {"first second third forth", "just another string"};
   Map map = new HashMap();
   Integer ONE = new Integer(1);
   for (int i=0, n=args.length; i<n; i++) {
    String key = args[i];
    Integer frequency = (Integer)map.get(key);
    if (frequency == null) {
     frequency = ONE;
    } else {
     int value = frequency.intValue();
     frequency = new Integer(value + 1);
    }
    map.put(key, frequency);
   }
   System.out.println(map);
   Map sortedMap = new TreeMap(map);
   System.out.println(sortedMap);
  }
}