test/java/nio/file/Files/walkFileTree/MaxDepth.java

*** 39,49 ****
              final int maxDepth = i;
              Files.walkFileTree(top, opts, maxDepth, new SimpleFileVisitor<Path>() {
                  // compute depth based on relative path to top directory
                  private int depth(Path file) {
                      Path rp = file.relativize(top);
!                     return (rp == null) ? 0 : rp.getNameCount();
                  }
  
                  @Override
                  public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
                      int d = depth(dir);
--- 39,49 ----
              final int maxDepth = i;
              Files.walkFileTree(top, opts, maxDepth, new SimpleFileVisitor<Path>() {
                  // compute depth based on relative path to top directory
                  private int depth(Path file) {
                      Path rp = file.relativize(top);
!                     return (rp.getFileName().toString().equals("")) ? 0 : rp.getNameCount();
                  }
  
                  @Override
                  public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
                      int d = depth(dir);