How to create HashTable from HashMap?

import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;

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

    HashMap hMap = new HashMap();

    hMap.put("1", "One");
    hMap.put("2", "Two");
    hMap.put("3", "Three");

    Hashtable ht = new Hashtable();
    ht.put("1", "REPLACED !!");
    ht.put("4", "Four");

    Enumeration e = ht.elements();
    while (e.hasMoreElements()){
      System.out.println(e.nextElement());
         }      

    ht.putAll(hMap);
    e = ht.elements();
System.out.println("in hashtable");
    while (e.hasMoreElements()){
    
     System.out.println(e.nextElement());
    }      
    
  }
}

OUTPUT:

Four
REPLACED !!
in hashtable
Four
Three
Two
One

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