import org.xmldb.api.base.*;
 import org.xmldb.api.modules.*;
 import org.xmldb.api.*;
 public class Query {
     public static void main(String[] args) throws Exception {
         Collection col = null;
         try {
             String driver = null;
             String prefix = null;

             if ( ( args.length == 1 ) && args[0].equals("dbxml") ) {
                 driver = "org.dbxml.client.xmldb.DatabaseImpl";
                 prefix = "xmldb:dbxml:///db/";

             } else {
                 driver = "org.xmldb.api.reference.DatabaseImpl";
                 prefix = "xmldb:ref:///";
             }

             Class c = Class.forName(driver);
             Database database = (Database) c.newInstance();

             if ( ! database.getConformanceLevel().equals("1") ) {
                 System.out.println("This program requires a Core Level 1 XML:DB " + "API driver");
                 System.exit(1);
             }
             DatabaseManager.registerDatabase(database);

             col = DatabaseManager.getCollection(prefix + "addresses");
             String xpath = "/address[@id = 1]";

             XPathQueryService service = (XPathQueryService) col.getService("XPathQueryService", "1.0");

             ResourceSet resultSet = service.query(xpath);
             ResourceIterator results = resultSet.getIterator();

             while (results.hasMoreResources()) {
                 Resource res = results.nextResource();
                 System.out.println((String) res.getContent());
             }
         } catch (XMLDBException e) {
             System.err.println("XML:DB Exception occurred " + e.errorCode + " " + e.getMessage());
         } finally {
             if (col != null) { col.close(); }
         }
     }
 }