Collections - Telephone Directry -Add / Remove

 Collections - Telephone Directry -Add / Remove

public class MapTest
{

    public static void main(String[] args)
    {
        Map mp = new Hashtable<String, String>();
        mp.put("Ram", "9830632010");
        mp.put("Sham", "9830632011");
        mp.put("Hari", "12001010002");
       
        System.out.println(mp);
       
        System.out.println( mp.containsKey("Ram"));
        mp.remove("Ram");
       
        System.out.println(mp);
       
       

    }

}