当我调试我的代码时,我发现 Iterator
的 hasNext()
方法返回 true
,但是 next()
方法抛出 NoSuchElementException.
When I debugged my code I found that the hasNext()
method of Iterator
returned true
, but the next()
method threw NoSuchElementException.
下面是我的代码:
Collection<TradeStock> restBuy=em.createQuery("select t from TradeStock ...t.getResultList();
if(!restBuy.isEmpty())
{
Iterator itrest=restBuy.iterator();
while(itrest.hasNext())
{
TradeStock ts=(TradeStock)itrest.next();
x+=ts.getTradeExecutedQuantity();
}
}
我做错了什么?
当我重新启动服务器并重新部署我的应用程序时,代码工作正常,所以我猜代码没有错,我无法理解 glassfish 的这种奇怪行为!
the code worked when i restarted the server and redeployed my app, so nothing was wrong with the code i guess, i cant understand this strange behavior of glassfish!
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