java - Why doesn't Files.isHidden() working correctly? -

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i'm messing around java nio , reason can't files.ishidden() return correct boolean value. program checks see if directory hidden if hidden make visible , if not hidden make hidden. have:

    path start = filesystems.getdefault().getpath("e:/documents/somedirectory");     try {         if (files.ishidden(start)){             system.out.println("dir hidden.");             files.setattribute(start, "dos:hidden", false);         } else {             system.out.println("dir not hidden. hiding.");             files.setattribute(start, "dos:hidden", true);         }      } catch (ioexception e) {         e.printstacktrace();     }

it keeps returning false , hiding directory despite directory being hidden. following code works fine using old file class w/ path class.

    path start = filesystems.getdefault().getpath("e:/documents/somedirectory");     file file = new file("e:/documents/somedirectory");     try {         if (file.ishidden()){             system.out.println("dir hidden.");             files.setattribute(start, "dos:hidden", false);         } else {             system.out.println("dir not hidden. hiding.");             files.setattribute(start, "dos:hidden", true);         }      } catch (ioexception e) {         e.printstacktrace();     }

as pointed out in comments, documentation of files.ishidden states:

the exact definition of hidden platform or provider dependent. […] on windows file considered hidden if isn't directory , dos hidden attribute set.

while last cited sentence explains while doesn’t return expected value directory on windows, want emphasize first sentence. using method burdened platform/provider specific semantics, while want do, toggle particular, platform specific flag.

in case, should that, elides conditionals of code:

path start=paths.get("e:/documents/somedirectory"); boolean ishidden=(boolean)files.getattribute(start, "dos:hidden"); system.out.println("dir "+(ishidden? "hidden. showing.": "not hidden. hiding")); files.setattribute(start, "dos:hidden", !ishidden);

note convenience method paths.get(…) filesystems.getdefault().getpath(…).


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