如何使用HashTable检索另一个语句记录？(How to Retrieve Another Statement Records Using HashTable?)

 晚上好，我尝试使用HashTable（）临时存储数据库表记录。 问题是我不知道为什么放在HashTable（）中的记录将始终是第一条记录。 我认为问题的出现是因为循环概念错误，相关代码： 
 
 
 
 宣布 
 
 
Hashtable hashsample = new Hashtable();
 
 
 
 for循环 
 
 
for (i = 0; i< db.getNumberOfRows(); i++) {

        hashsample.put(i, db.getData());
        System.out.println(hashsample);
    }
 
 p / s：我是HashTable的新手，db（数据库语句）运行正常... 
 
 需要一些提示并建议，谢谢先进的^^ 

Good Evening, I try to use the HashTable() for storing a database table records temporarily . The problem is I dunno why the records which being put inside the HashTable() will always be the first record. I think the problem occur is because of the wrong for loops concept, related code:
 
 
 
Declare
 
 
Hashtable hashsample = new Hashtable();
 
 
 
for loop
 
 
for (i = 0; i< db.getNumberOfRows(); i++) {

        hashsample.put(i, db.getData());
        System.out.println(hashsample);
    }
 
p/s: I'm new in HashTable, the db (database statement) run fine...
 
Need some hints and advised, thanks in advanced^^

原文：https://stackoverflow.com/questions/17587307