retrieving element values from xml in java

I have multiple tags <a>value</a>. in different nodes. like

i want to retrieve all 'a' values.  

appreciate any help
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There are multiple ways to do it.

XPath is the key here.

Are you using any XML library or are you constrained to using javax.xml API?
narcist527Author Commented:

we can not use xpath here since it is not specific. it can be any where. I am using DOM parser to retrieve .
I disagree.

Ok, It can be anywhere in the DOM. That doesn't matter to XPATH.

the expression //a will find you all 'a' nodes in the DOM.

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narcist527Author Commented:
below one is my code and it is returning 0 elements . any help where I am making mistake? I am using the xml file .

XPath xPath = XPathFactory.newInstance().newXPath();
        InputSource docu = new InputSource(new InputStreamReader(new FileInputStream(new File(file))));
        String xpression = "//a";
 NodeList nodes = (NodeList) xPath.compile(xpression).evaluate(docu,XPathConstants.NODESET);

The expression given to you works fine with that (after correcting your xml)
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