How can I traverse xml nodes without knowing its schema

I know I can use DocumentBuilder to parse an xml file and traverse through the nodes but I am stuck at figuring out if the node has any more children. So for example in this xml:

<MyDoc>
 <book>
   <title> ABCD </title>
 </book>
</MyDoc>

if I do node.hasChildNodes() I get true for both book and title. But what I am trying to do is if a node has some text value (not attributes) like title then print it otherwise don't do anything. I know this is some simple check but I just can't seem to find the answer on web. I am probably not searching with right keywords. Thanks in advance.