code: @Override
      public InputSource resolveEntity(String publicId, String systemId) {
  
  	for (int i = 0; i < Constants.DTDS_TLD.length; i++) {
  	    if (publicId.equals(Constants.DTDS_TLD[i])) {
  		return new InputSource(getClass().getResourceAsStream(LUCEE_DTD_1_0));
  	    }
  	}
  
  	if (publicId.equals("-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN")) {
  	    return new InputSource(getClass().getResourceAsStream(SUN_DTD_1_1));
  	}
  	else if (publicId.equals("-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN")) {
  	    return new InputSource(getClass().getResourceAsStream(SUN_DTD_1_2));
  	}
  	return null;
      }
docs: Laedt die DTD vom lokalen System.
  
  @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String, java.lang.String)