How Dom parser in jdk1.4 could not run in jdk1.5?

Question

Hi,guys,I've wrote a class to parse XML file some easily for me , such as
package eisen.util;
* <p>Title: E-Future Pos Software</p>
* <p>Description: A new version for E-Future Pos software on Linux text terminal and Windows GUI.</p>
* <p>Copyright: E-Future Copyright (c) 2002</p>
* <p>Company: E-Future</p>
* @author Eisen Wang
* @version 1.0
import java.util.*;
//import org.apache.xerces.parsers.*;
import java.io.*;
import javax.xml.parsers.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import org.w3c.dom.*;
public class Configurator
      * Constructor. Build by a xml file containing infomations about the node
      * @param fileName a String point to the XML file
     public Configurator(String fileName)
          try
               DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
               DocumentBuilder parser = factory.newDocumentBuilder();
               document = parser.parse(fileName).getFirstChild() ;
          }catch(Exception e)
               e.printStackTrace() ;
               return;
//          document = parser.getDocument() ;
           * Now we get the real root node of whole document, but it's not
           * the actual first availble node . So we have to proceed the 1st child
           * node of it.
          NodeList nl = document.getChildNodes() ;
          document = nl.item(0) ;
     * constructor.build a confgurator by the root node
     * @param node root node of the configuration file.
     public Configurator(Node node)
          document = node;
     * constructor. copy another configurator object to itself
     * @param c the original Configurator object
     public Configurator(Configurator c)
          document = c.document;
     * get the name of the root node.
     * @return String the name of root of whole document
     public String getName()
          String strTemp = document.getNodeName() ;
          return(strTemp);
     * get the string content of the node property
     * @param flag a string point to the corresponds property
     * @return a string of the property content or null if flag is not existed.
     public String getString(String flag)
          NamedNodeMap nm = document.getAttributes() ;
          if (nm==null) return(null);
          Node node = nm.getNamedItem(flag);
          if (node==null) return(null);
          String str = node.getNodeValue() ;
          return (str);
      * get the integer value of the node property
      * @param flag a string point to the corresponds property
      * @return the value of the property
     public int getInt(String flag)
          NamedNodeMap nm = document.getAttributes() ;
          Node node = nm.getNamedItem(flag);
          int val ;
          if (node!=null) val = Integer.parseInt(node.getNodeValue())  ;
          else val = 0;
          return (val);
      * get the succeeding XML configuration file
      * @return the filename recording in the XML file of the node.
     public Configurator getProfile()
          Configurator conf;
          try
               Node profile = document.getFirstChild() ;
               String filename = null;
               if (profile.getNodeType() == Node.TEXT_NODE )
                    filename = profile.getNodeValue() ;
               conf=new Configurator(filename);
          }catch(Exception e)
               conf = null;
          return (conf);
     * get all the Element child nodes of the root node usually the
     * child components of the container.
     * @return a Vector contains all the Configurators made by children nodes
     public Vector getChilds()
          if ((getString("profile")!=null)&&(getString("profile").toUpperCase() .equals("YES") ))
               Configurator conf = getProfile();
               if (conf != null) return(conf.getChilds() );
               else return(null);
          else
               Vector nl;
               nl = new Vector();
               NodeList nltemp = document.getChildNodes() ;
               for (int i=0;i<nltemp.getLength() ;i++)
                    Node node = nltemp.item(i) ;
                    if (node.getNodeType() == node.ELEMENT_NODE ) nl.add(new Configurator(node));
               return (nl);
      * get all the Element child nodes named of 'name' of the root node usually the
      * child components of the container.
      * @param name the assigned name of selected nodes
      * @return all the Configurators made by children nodes named of 'name'
     public Vector getChilds(String name)
          if ((getString("profile")!=null)&&(getString("profile").toUpperCase() .equals("YES") ))
               Configurator conf = getProfile();
               if (conf != null) return(conf.getChilds() );
               else return(null);
          else
               Vector nl;
               nl = new Vector();
               NodeList nltemp = document.getChildNodes() ;
               for (int i=0;i<nltemp.getLength() ;i++)
                    Node node = nltemp.item(i) ;
                    if ((node.getNodeType() == node.ELEMENT_NODE)&&(node.getNodeName() .equals(name))) nl.add(new Configurator(node));
               return (nl);
     public Configurator getChild(int no)
          Vector nltemp = getChilds();
          Configurator temp = (Configurator)nltemp.get(no) ;
          return (temp);
      * a Node of the configuration point to the actual root.
     private Node document;
}This class could run well on jdk1.4, but while using jdk1.5, compling report no error but it would report "java.lang.VerifyError: (class: com/future/DataCommit, method: <init> signature: ()V) Incompatible object argument for function call" in run-time. I don't know how to solve it, and checked out all the file on internet I found-- can't find what error in my code. Please help me to correct it . Thanks a lot.

Answer 1

Yeah .of course. the error occurs while init the DataCommit object in main(),and the error message is *"java.lang.VerifyError: (class: com/future/DataCommit, method: <init> signature: ()V) Incompatible object argument for function call"*
package com.future;
import java.io.*;
import java.util.*;
import eisen.util.*;
public class DataCommit
     protected Configurator m_config = null;
     protected String m_ip = null;
     protected int    m_port = 21;
     protected String m_localfolder = System.getProperty("user.dir");
     protected String m_localbackupfolder = System.getProperty("user.dir")+File.pathSeparator+"bak";
     protected String m_Store = null;
     public DataCommit()
          m_config = new Configurator("d:\\temp\\future.xml");
//          Configurator temp = (Configurator)m_config.getChilds("site").get(0);
//          m_ip = temp.getString("ip");
//          m_port = temp.getInt("port");
//          temp = (Configurator)m_config.getChilds("folder").get(0);
//          m_localfolder = temp.getString("local");
//          m_localbackupfolder = temp.getString("backup");
//          temp=(Configurator)m_config.getChilds("shop").get(0);
//          m_Store = temp.getString("id");
     public static void main(String[] args)
          DataCommit dataCommit1 = new DataCommit();
     public void commit()
}Edited by: Eisen on Oct 27, 2008 10:03 PM