public String readWPHex() throws IOException {
        return StringUtils.leftPad(Integer.toString(readWP(), 16), 2, '0');
    }
Reads the next byte and returns it as an hexadecimal value.

@return hexadecimal string for a single byte
@throws IOException if not enough bytes remain
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-miscoffice-module/src/main/java/org/apache/tika/parser/wordperfect/WPInputStream.java