Consider the following code that expects to walk the contents of java.base:

        ImageReader imageReader = ImageReaderFactory.getImageReader();
        ImageReader.Node top = imageReader.findNode("/modules/java.base");
        Deque<ImageReader.Node> stack = new ArrayDeque<>();
        stack.push(top);
        while (!stack.isEmpty()) {
            ImageReader.Node dir = stack.poll();
            for (ImageReader.Node node : dir.getChildren()) {
                if (node.isDirectory()) {
                    stack.push(node);
                } else {
                    System.out.println(node.getName());
                }
            }
        }

It only prints out module-info.class when it should list all resources in the module.

The issue seems to be that getChildren() returns a Node that is not completed.

The ModuleReader list() implementation in jigsaw/jake works arounds this issue by calling findNode to re-find child nodes that are also directories.