java.nio.file.Files.isReadable() returns false on readable file

[Victor Ott]

Hello,

I've searched for similar issues and have found this thread int nio-dev
mailing list: "java.nio.file.Files.isReadable() slow on Windows 7" (
http://mail.openjdk.java.net/pipermail/nio-dev/2012-May/001666.html  or
http://markmail.org/thread/ytjr6dwrxwxku2r4 ), but am asking this on
nio-discuss because ... maybe I'm not seeing the obvious.
Besides noticing that the first call to Files.isReadable() is indeed slow
(only the first one, not subsequent calls), I have another issue:
Files.isReadable() fails an a obviously readable file. See below my example
code.

Here the output:
file: c:\temp\dummyfile.txt
freshly read: ABC
File.canRead():     true
Files.isReadable(): false

WinXP x32, JDK7u5 x32, NTFS file system. (And yes, I do have local admin
rights).

Thanks in advance,
Victor


package tst;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class FilesIsReadableTest {
    public static void main(String[] args) throws IOException {
        final Path rootDirectory = Paths.get("c:/temp");
        final Path file = Paths.get(rootDirectory.toString(),
"dummyfile.txt");

        Files.deleteIfExists(file);
        Files.createFile(file);

        System.out.println("file: " + file);
        try (Writer o = new FileWriter(file.toFile())) {
            o.write("ABC");
        }

        try (BufferedReader r = new BufferedReader(new
FileReader(file.toFile()))) {
            System.out.println("freshly read: " + r.readLine());
        }

        System.out.println("File.canRead():     " +
file.toFile().canRead());
        System.out.println("Files.isReadable(): " + Files.isReadable(file));

    }
}
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