Help!!! How to use 'XMLGrammarCachingConfiguration'?

[최원석]

Hi, there.

I want to use 'Schema caching', so I worte some test code below. I used 
'XMLGrammarCachingConfiguration' class.
But it generate exception that I can't understand. What's wrong? And is there 
another way using 'schema caching'?
Thank you.

--System------------------------------------------------
 OS: RedHat 7.3
 JDK: 1.3.1
 Xerces: 2.0.1

--exception----------------------------------------------
Exception in thread "main" java.lang.VerifyError: (class: 
org/apache/xerces/impl/xs/traversers/XSDHandler, method: getSchema signature: 
(Ljava/lang/String;Lorg/apache/xerces/xni/parser/XMLInputSource;ZSLorg/w3c/dom/Element;)Lorg/w3c/dom/Document;)
 Incompatible object argument for function call
        at 
org.apache.xerces.parsers.XMLGrammarCachingConfiguration.parseGrammar(Unknown 
Source)
        at ParserTest.main(ParserTest.java:58)

--code----------------------------------------------------
import java.lang.System;
import java.util.Properties;
import java.io.*;

import org.apache.xerces.parsers.StandardParserConfiguration;
import org.apache.xerces.parsers.DOMParser;
import org.apache.xerces.parsers.XMLGrammarCachingConfiguration;
import org.apache.xerces.xni.grammars.XMLGrammarDescription;
import org.apache.xerces.xni.parser.XMLInputSource;

public class ParserTest
{
    public static void main(String argv[])
    {
        if (argv.length != 2) 
        {
            System.err.println("usage: java ParserTest XML-FileName 
XSD-FileName");
            System.err.println();
            System.exit(1);
        }
        
        String strPath = System.getProperties().getProperty("user.dir") + "/";
        
        XMLInputSource xIs = new XMLInputSource(null, argv[1], strPath);
        System.out.println(xIs.getSystemId()); // for test
        System.out.println(xIs.getBaseSystemId()); //// for test
        try
        {
            xIs.setByteStream(new FileInputStream(strPath + argv[0]));
        }
        catch(FileNotFoundException fe)
        {
            fe.printStackTrace();
        }
        catch(IOException ie)
        {
            ie.printStackTrace();
        }
        
        try
        {
            InputStream is = xIs.getByteStream();
            byte[] bs = new byte[is.available()];
            is.read(bs, 0, is.available());
            String strDoc = new String(bs);
            System.out.println(strDoc);  // for test
        }
        catch(IOException ie)
        {
            ie.printStackTrace();
        }
                
        XMLGrammarCachingConfiguration parser = null;
        parser = new XMLGrammarCachingConfiguration();
        
        try
        {
            parser.parseGrammar(XMLGrammarDescription.XML_SCHEMA, xIs);
        }
        catch(org.apache.xerces.xni.XNIException xniE)
        {
            xniE.printStackTrace();
        }
        catch(java.io.IOException ioE)
        {
            ioE.printStackTrace();
        }
    }
}