TreeLayoutAdaptor.java 文件源码

@Override
public Iterator<Tree> iterator() {
    return new Iterator<Tree>() {
        private int i = tree.getChildCount();

        @Override
        public boolean hasNext() {
            return i > 0;
        }

        @Override
        public Tree next() {
            if (!hasNext())
                throw new NoSuchElementException();

            return tree.getChild(--i);
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException();
        }
    };
}