这可能是一个长镜头，但我唯一的想法是，也许有两个 NoSuchElementException异常$之间的名称冲突C $ C>类和你正在处理您的命名空间中一个可访问的，而code抛出其他。

This may be a long shot, but the only idea that I have is that maybe there's a name conflict between two NoSuchElementException classes and you're handling the one accessible from your namespace while the code is throwing the other.