Method children

corpus/java/training/guava/io/Files.java:794–805

(File file)

  private static final TreeTraverser<File> FILE_TREE_TRAVERSER =
      new TreeTraverser<File>() {
        @Override
        public Iterable<File> children(File file) {
          // check isDirectory() just because it may be faster than listFiles() on a non-directory
          if (file.isDirectory()) {
            File[] files = file.listFiles();
            if (files != null) {
              return Collections.unmodifiableList(Arrays.asList(files));
            }
          }

          return Collections.emptyList();
        }

        @Override
        public String toString() {