public class OrderProcessor {

 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
        File docFile = new File("check.xml");
        Document doc = null;
        try{
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilder db = dbf.newDocumentBuilder();
         doc = db.parse(docFile);
                
        } catch (javax.xml.parsers.ParserConfigurationException pce){
         System.out.print("The parser was not configured correctly.");
            System.exit(1);         
        } catch (java.io.IOException ie){
         System.out.println("Cannot read input file.");
         System.exit(1);
        } catch (org.xml.sax.SAXException se){
         System.out.println("Problem parsing the file.");
         System.exit(1);
        } catch (java.lang.IllegalArgumentException ae){
         System.out.println("Please specify an XML source.");
         System.exit(1);
        }
        Element root = doc.getDocumentElement();
        System.out.println("The root element is "+root.getNodeName());
 }
}

编译的时候总是报：“Cannot read input file”