import java.util.*;
import java.lang.*;
import java.io.*;
 
class Basic {
      public static void main(String a[]){
        Hashtable<String,String> ht = new Hashtable<String,String>();
        ht.put("first", "FIRST INSERTED");
        ht.put("second", "SECOND INSERTED");
        ht.put("third","THIRD INSERTED");
        System.out.println(ht);
        System.out.println("Value of key 'second': "+ht.get("second"));
        System.out.println("Is Hashtable empty? "+ht.isEmpty());
        ht.remove("third");
        System.out.println(ht);
        System.out.println("Size of the Hashtable: "+ht.size());
    }
}

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