FileUtil { static void unTarUsingJava(File inFile, File untarDir, boolean gzipped) throws IOException { InputStream inputStream = null; TarArchiveInputStream tis = null; try { if (gzipped) { inputStream = new BufferedInputStream(new GZIPInputStream( new FileInputStream(inFile))); } else { inputStream = new BufferedInputStream(new FileInputStream(inFile)); } tis = new TarArchiveInputStream(inputStream); for (TarArchiveEntry entry = tis.getNextTarEntry(); entry != null;) { unpackEntries(tis, entry, untarDir); entry = tis.getNextTarEntry(); } } finally { IOUtils.cleanupWithLogger(LOG, tis, inputStream); } }  static Path[] stat2Paths(FileStatus[] stats); static Path[] stat2Paths(FileStatus[] stats, Path path); static void fullyDeleteOnExit(final File file); static boolean fullyDelete(final File dir); static boolean fullyDelete(final File dir, boolean tryGrantPermissions); static String readLink(File f); static boolean fullyDeleteContents(final File dir); static boolean fullyDeleteContents(final File dir, final boolean tryGrantPermissions); @Deprecated static void fullyDelete(FileSystem fs, Path dir); static boolean copy(FileSystem srcFS, Path src,
                             FileSystem dstFS, Path dst,
                             boolean deleteSource,
                             Configuration conf); static boolean copy(FileSystem srcFS, Path[] srcs,
                             FileSystem dstFS, Path dst,
                             boolean deleteSource,
                             boolean overwrite, Configuration conf); static boolean copy(FileSystem srcFS, Path src,
                             FileSystem dstFS, Path dst,
                             boolean deleteSource,
                             boolean overwrite,
                             Configuration conf); static boolean copy(FileSystem srcFS, FileStatus srcStatus,
                             FileSystem dstFS, Path dst,
                             boolean deleteSource,
                             boolean overwrite,
                             Configuration conf); static boolean copy(File src,
                             FileSystem dstFS, Path dst,
                             boolean deleteSource,
                             Configuration conf); static boolean copy(FileSystem srcFS, Path src,
                             File dst, boolean deleteSource,
                             Configuration conf); static String makeShellPath(String filename); static String makeShellPath(File file); static String makeSecureShellPath(File file); static String makeShellPath(File file, boolean makeCanonicalPath); static long getDU(File dir); static void unZip(InputStream inputStream, File toDir); static void unZip(File inFile, File unzipDir); static void unTar(InputStream inputStream, File untarDir,
                           boolean gzipped); static void unTar(File inFile, File untarDir); static int symLink(String target, String linkname); static int chmod(String filename, String perm
                          ); static int chmod(String filename, String perm, boolean recursive); static void setOwner(File file, String username,
      String groupname); static boolean setReadable(File f, boolean readable); static boolean setWritable(File f, boolean writable); static boolean setExecutable(File f, boolean executable); static boolean canRead(File f); static boolean canWrite(File f); static boolean canExecute(File f); static void setPermission(File f, FsPermission permission
                                   ); static final File createLocalTempFile(final File basefile,
                                               final String prefix,
                                               final boolean isDeleteOnExit); static void replaceFile(File src, File target); static File[] listFiles(File dir); static String[] list(File dir); static String[] createJarWithClassPath(String inputClassPath, Path pwd,
      Map<String, String> callerEnv); static String[] createJarWithClassPath(String inputClassPath, Path pwd,
      Path targetDir,
      Map<String, String> callerEnv); static List<Path> getJarsInDirectory(String path); static List<Path> getJarsInDirectory(String path, boolean useLocal); static boolean compareFs(FileSystem srcFs, FileSystem destFs); static final int SYMLINK_NO_PRIVILEGE; }
@Test(timeout = 8000) public void testCreateSymbolicLinkUsingJava() throws IOException { setupDirs(); final File simpleTar = new File(del, FILE); OutputStream os = new FileOutputStream(simpleTar); TarArchiveOutputStream tos = new TarArchiveOutputStream(os); File untarFile = null; try { final String tmpDir = "tmp/test"; File tmpDir1 = new File(tmpDir, "dir1/"); File tmpDir2 = new File(tmpDir, "dir2/"); tmpDir1.mkdirs(); tmpDir2.mkdirs(); java.nio.file.Path symLink = FileSystems .getDefault().getPath(tmpDir1.getPath() + "/sl"); Files.createSymbolicLink(symLink, FileSystems.getDefault().getPath(tmpDir2.getPath())).toString(); assertTrue(Files.isSymbolicLink(symLink.toAbsolutePath())); putEntriesInTar(tos, tmpDir1.getParentFile()); tos.close(); untarFile = new File(tmpDir, "2"); FileUtil.unTarUsingJava(simpleTar, untarFile, false); assertTrue(Files.exists(untarFile.toPath())); assertTrue(Files.exists(FileSystems.getDefault().getPath(untarFile .getPath(), tmpDir))); assertTrue(Files.isSymbolicLink(FileSystems.getDefault().getPath(untarFile .getPath().toString(), symLink.toString()))); } finally { FileUtils.deleteDirectory(new File("tmp")); tos.close(); } }