更新:我看到我的问题是重复的,我的问题是:在数组中使用泛型是不安全的。但是,我如何更改代码来修复此问题?我所有的一切都是(我甚至不知道这段代码是否与旧版相似)
function required() {
var empt = document.forms["me_validate"]["insert_vender_emails"].value;
if (empt == "") {
alert("Please fill out the vendor email field");
return false;
}
}
但是这段代码也给了我一个警告。
上一篇文章(Raw types warning):
我不是一名java开发人员,但我希望在这部分代码中修复项目中唯一的警告:
_readWriteThreads = (ReadWriteThread<T, RP, SP>[]) Array.newInstance(ReadWriteThread.class, sc.getSelectorThreadCount());
警告:
public abstract class SelectorThread<T extends MMOConnection<T, RP, SP>, RP extends ReceivablePacket<T, RP, SP>, SP extends SendablePacket<T, RP, SP>>
{
protected static final Log _log = new MMOLogger(SelectorThread.class, 1000);
private final AcceptorThread<T, RP, SP> _acceptorThread;
private final ReadWriteThread<T, RP, SP>[] _readWriteThreads;
protected SelectorThread(SelectorConfig sc, IPacketHandler<T, RP, SP> packetHandler) throws IOException
{
_acceptorThread = new AcceptorThread<T, RP, SP>("AcceptorThread", this, sc);
_readWriteThreads = new ReadWriteThread[sc.getSelectorThreadCount()];
for (int i = 0; i < _readWriteThreads.length; i++)
_readWriteThreads[i] = new ReadWriteThread<T, RP, SP>("ReadWriteThread-" + (i + 1), this, sc, packetHandler);
}
...
}
拜托,有人可以帮我解决这个问题,或者告诉我必须知道解决这个问题。我理解上面的行由Type safety: The expression of type ReadWriteThread[] needs unchecked
conversion to conform to ReadWriteThread<T,RP,SP>[]
修复,但这不适用于数组。
答案 0 :(得分:0)
阵列和泛型不能很好地结合在一起。你可以让它们起作用,但这需要付出很多努力。
更好的解决方案是使用List
,可能是ArrayList
,其中泛型“只是工作”:
private final List<ReadWriteThread<T, RP, SP>> _readWriteThreads;
使用
初始化它_readWriteThreads = new ArrayList<>();
然后
_readWriteThreads.add(
new ReadWriteThread<T, RP, SP>("ReadWriteThread-" + (i + 1), this, sc, packetHandler));