Get Size of Java Hashtable Example

/*
  Get Size of Java Hashtable Example
  This Java Example shows how to get the size or nubmer of key value pairs
  stored in Hashtable using size method.
*/
 
import java.util.Hashtable;
 
public class GetSizeOfHashtableExample{
 
  public static void main(String[] args) {
 
    //create Hashtable object
    Hashtable ht = new Hashtable();
 
    /*
      To get the size of Hashtable use
      int size() method of Hashtable class. It returns the number of key values
      pairs stored in Hashtable object.     
    */
    System.out.println("Size of Hashtable : " + ht.size());
 
    //add key value pairs to Hashtable using put method
    ht.put("1","One");
    ht.put("2","Two");
    ht.put("3","Three");
    System.out.println("Size of Hashtable after addition : " + ht.size());
 
    //remove one element from Hashtable using remove method
    Object obj = ht.remove("2");
    System.out.println("Size of Hashtable after removal : " + ht.size());
  }
}
 
/*
Output would be
Size of Hashtable : 0
Size of Hashtable after addition : 3
Size of Hashtable after removal : 2
*/