How to read the attributes of XML file

Hi this is ant,
I am new to java, XML, I have a senario
1) I have to read all the href attributes for topicref child, and then read the corresponding xml file which is mapped in href="".
First.xml
<map>
<topicref nav="garage" href="task/gar/view.xml" class="..">
<linktext class="_map/linktext">Garage</linktext>
<topicref nav="" href="task/gar/change.xml" ..>
<linktext class="_map/linktext">Garage</linktext>
</topicref>
</linktext>
</topicref>
</map>
2) task/gar/view.xml file , has id attribute & need to get the id values.
Like this I have to get the id values for all the href attributes of first xml & read correspoding id values.
I have just read some doc using XPATH we can do, please help me.
Thanks.
anto

* Try this Link, there is solution
http://forums.sun.com/thread.jspa?messageID=9665228
Can...Can...If we try...!

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