private void validate(InputStream is) {
 WebLogicSAXParserFactory factory = new WebLogicSAXParserFactory();
 
 try {
  SAXParser parser = factory.newSAXParser();
  
  parser.parse(is, new DefaultHandler()) {
   private int overallarraylength = 0;
   
   public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXEception {
    if (qName.equalsIgnoreCase("object")) {
     throw new IllegalStateException("Invalid element qName:object");
    } else if (qName.equalsIgnoreCase("new")) {
     throw new IllegalStateException("Invalid element qName:new");
    } else if (qName.equalsIgnoreCase("method")) {
     throw new IllegalStateException("Invalid element qName:method");
    } else {
     if (qName.equalsIgnoreCase("void")) {
      for(int attClass = 0;attClass < attributes.getLength(); ++attClass) {
       if (!"index".equalsIgnoreCase(attributes.getQName(attClass))) {
        throw new IllegalStateException("Invalid attribute for element void: " + attributes.getQName(attClass));
       }
      }
     }
     
     ... more code here ...
    }
   }
  }
 }
}