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);
}
}
运行结果