How can I fire Xquery in java?

I want to fire query in netbeans......
Please help me for this...
Like an example --- I have a xml file "student.xml" and i want to retrieve student name..
So how I do in netbeans ..

What do you mean, "fire xquery"?

What does this have to do with NetBeans? Are you just asking how to use an XML library?

I want to know that how can we use xqj.

I hope you have not been doing nothing about the question while waiting for an answer here.

A google search for "java xquery" turns up plenty of toolkits, examples and tutorials.

Bill

I search in google and get one code in xqj....

Code is---

package ibm.dw.xqj;

import javax.xml.namespace.QName;
import java.util.Properties;

import com.ddtek.xquery3.XQConnection;
import com.ddtek.xquery3.XQException;
import com.ddtek.xquery3.XQExpression;
import com.ddtek.xquery3.XQItemType;
import com.ddtek.xquery3.XQSequence;
import com.ddtek.xquery3.xqj.DDXQDataSource;

public class XQueryTester {

// Filename for XML document to query
  private String filename;

// Data Source for querying
  private DDXQDataSource dataSource;

// Connection for querying
  private XQConnection conn;

public XQueryTester(String filename) {
    this.filename = filename;
  }

public void init() throws XQException {
    dataSource = new DDXQDataSource();
    conn = dataSource.getConnection();
  }

public String query(String queryString) throws XQException {
    XQExpression expression = conn.createExpression();
    expression.bindString(new QName("docName"), filename,
      conn.createAtomicType(XQItemType.XQBASETYPE_STRING));
    XQSequence results = expression.executeQuery(queryString);
    return results.getSequenceAsString(new Properties());
  }

public static void main(String[] args) {
    if (args.length != 1) {
      System.err.println("Usage: java ibm.dw.xqj.XQueryTester [XML filename]");
      System.exit(-1);
    }

try {
      String xmlFilename = args[0];
      XQueryTester tester = new XQueryTester(xmlFilename);
      tester.init();

final String sep = System.getProperty("line.separator");
      String queryString =
        "declare variable $docName as xs:string external;" + sep +
        "      for $cd in doc($docName)/CATALOG/CD " +
        "    where $cd/YEAR > 1980 " +
        "      and $cd/COUNTRY = 'USA' " +
        " order by $cd/YEAR " +
        "   return " +
        "<cd><title>{$cd/TITLE/text()}</title>" +
        " <year>{$cd/YEAR/text()}</year></cd>";
      System.out.println(tester.query(queryString));
    } catch (Exception e) {
      e.printStackTrace(System.err);
      System.err.println(e.getMessage());
    }
  }
}

In this I am getting error..
package com.ddtek.xquery3 does not exist

From where I can get this package ???
Please help me to get out of this problem..

If you're faced with an unknown package of "com.ddtek..." then the first stop -assuming that a web search returns nothing- would be ddtek.com; that's how such package names usually work.
JavaRanch's XmlFaq also talks about XQJ.

com.ddtek.xquery3

If you check the first hit that's the Javadoc page. Strip off everything but the domain name (leaving http://www.xquery.com/) and open that page. It shouldn't be too hard to find it then. It's not free though.

from where I can get XQJ classes??

like these classes--

com.ddtek.xquery3.XQConnection;
com.ddtek.xquery3.XQException;
com.ddtek.xquery3.XQExpression;
com.ddtek.xquery3.XQItemType;
com.ddtek.xquery3.XQSequence;
com.ddtek.xquery3.xqj.DDXQDataSource;

Did you actually read the replies from Rob and myself?

yes, i have read both replies..
but when I click on link http://www.google.com/search?q=com.ddtek.xquery3 then i find that there is explanation of all these classes about com.ddtek.xquery3.XQConnection;
com.ddtek.xquery3.XQException;
com.ddtek.xquery3.XQExpression;

But I don't know how to use these classes??
And How would I import these class in program??
Actually this is my first XQJ code..So I am facing such problem..
Please give solution to get out of this problem...

Try looking a little harder... http://www.xquery.com/xquery/

Looks like this is a commercial product.

And documentation is here:

http://www.xquery.com/docs/