import java.util.Hashtable; //hashtable public class test70 { public static void main(String[] args){ Hashtable ht=new Hashtable(); ht.put("k0","歌谣"); ht.put("k1","小白"); ht.put("k2","小红"); //ht.put("k3",null);//hashtable不能用null存取值 System.out.println( ht); } }
