对于Java 6及更低版本，

您将需要使用本机调用，这里是Windows的一种方式

  Runtime.getRuntime （）.exec（attrib + H myHiddenFile.java）; 
 

您应该了解一下有关win32-api或Java Native的信息。

I need to make files and folders hidden on both Windows and Linux. I know that appending a '.' to the front of a file or folder will make it hidden on Linux. How do I make a file or folder hidden on Windows?

For Java 6 and below,

You will need to use a native call, here is one way for windows

Runtime.getRuntime().exec("attrib +H myHiddenFile.java");

You should learn a bit about win32-api or Java Native.