获取哈希表的大小

 

import java.util.Hashtable;

 
 /**
  from
 * 时 代 J a v a - N o w J a v a . c o m 
 **/

public class Main {

 

  public static void main(String[] args) {

    Hashtable ht = new Hashtable();

    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());

   

    Object obj = ht.remove(