TreeLayoutAdaptor.java 文件源码

@Override
public Iterator<Tree> iterator() {
    return new Iterator<Tree>() {
        private int i = 0;

        @Override
        public boolean hasNext() {
            return tree.getChildCount() > i;
        }

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

            return tree.getChild(i++);
        }

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