private static void loadEncodingSizes() {
private synchronized static void loadEncodingSizes() {  if (encodingSizesLoaded) return;
    private static void loadEncodingSizes() {        Properties props;        try {            props = loadProperties(ISC_ENCODING_SIZE_RESOURCE);        } catch(IOException ex) {            ex.printStackTrace();            return;        }        Iterator iterator = props.keySet().iterator();        while(iterator.hasNext()) {            String iscEncoding = (String)iterator.next();            String size = (String)props.get(iscEncoding);            iscEncodingSizes.put(iscEncoding, new Byte(size));        }        encodingSizesLoaded = true;    }