Xpath query ..looks tricky

Question

Hi ,
The following is the xml file that i am using.
I want to generate an xpath that will give me an String output such as
"doc1,doc2,doc3,doc4,doc5."
I tried many options either i am able to get a nodelist or only one string (the first doc -
doc1) as output
Can you please tell me how to go about this.
<information>
     <reference>
          <docid>doc1</docid>
     </reference>
     <reference>
          <docid>doc2</docid>
     </reference>
     <reference>
          <docid>doc3</docid>
     </reference>
     <referece>
          <docid>doc4</docid>
     </reference>
     <reference>
          <docid>doc5</docid>
     </reference>
</information>Thanks for your time

Answer 1

Many thanks.. i actually iterated through the node list and got it done..but now i am stuck with a stream.closed error.. my code is as follows..i tried resetting the buffer..and creating a new InputSource.. but yet i get the same error..
ByteArrayInputStream baIs = new ByteArrayInputStream(strr.getBytes());
     BufferedReader bfr = new BufferedReader(new InputStreamReader(baIs));    
      InputSource ins = new InputSource(bfr);
      String ipcCountText = "count(//foreign-reference/ipc)";
      String ipcCount  = (String) xpathEvaluator.evaluate(ipcCountText, ins,
                                                        XPathConstants.STRING);
      Integer intIpcCount = new Integer(ipcCount);
      int ipcCnt = intIpcCount.intValue();
      StringBuffer sb= new StringBuffer();
      String xp = null;
      for(int i=1;i<(ipcCnt+1);i++)
        xp = "//foreign-reference[" + i + "]/ipc";       
        sb.append((String) xpathEvaluator.evaluate(xp, ins, XPathConstants.STRING));
        sb.append(", ");    
     System.out.println("[OUTPUT] = " + sb.toString());output
java.io.IOException: Stream closed
     at java.io.BufferedReader.ensureOpen(Unknown Source)
     at java.io.BufferedReader.read(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.skipString(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
Can you please suggest what problem this could be.. i have been struggling with it for some time... hope its not something really silly that i have missed out....
Thanks a lot for your help...