reading from an XML file

Hi,

I have an XML which I created using XStream. This file is formatted like this:

<entity>
......details of entity....
</entity>
<entity>
......details of entity....
</entity>
<entity>
......details of entity....
</entity>
......

Basically I obtained this file by serializing objects from a list one-by-one. Now, I want to read this file in the same way (one-by-one). This is because I don't want to load 1Gb od data into memory and after that process each entity. I want to read first entry (entity) and process it. After that I want to read the second entry (entity) and process it... and so on. Is there any way to obtain this using XStream? I managed to read the first entry using this code:

InputStream inputStream = new FileInputStream(path);
XStream stream = new XStream(new StaxDriver());
stream.processAnnotations(Entity.class);
while (true)

but I can't move to the next one.
Thank you