Java Utililty Methods XML Data Type Converter

try {
    return new ObjectInputStream(new ByteArrayInputStream(DatatypeConverter.parseBase64Binary(s)))
            .readObject();
} catch (Exception e) {
    throw new RuntimeException(e.toString(), e);

try {
    return fromString(s);
} catch (final Exception e) {
    e.printStackTrace();
    return null;

return random(32);

final byte[] salt = new byte[clientNonceByteCount];
randomGenerator.nextBytes(salt);
return DatatypeConverter.printHexBinary(salt).toLowerCase();

List<byte[]> byteList = new ArrayList<byte[]>();
byte[] tempByte = null;
if (isDecode) {
    tempByte = DatatypeConverter.parseBase64Binary(nomal);
} else {
    tempByte = nomal.getBytes(CHARACTER_SET);
int needBlankLength = 0;
...

byte[] listByte = new byte[byteList.size() * 16];
for (int i = 0; i < byteList.size(); i++) {
    byte[] temp = (byte[]) byteList.get(i);
    for (int j = 0; j < temp.length; j++) {
        listByte[j + (16 * i)] = temp[j];
int blankCnt = 0;
...

StringBuilder inlineURL = new StringBuilder("data:;base64,");
inlineURL.append(DatatypeConverter.printBase64Binary(bytes));
return inlineURL.toString();

String imageString = DatatypeConverter.printBase64Binary(image);
URL url = new URL("https://api.imgur.com/3/image");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String data = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(imageString, "UTF-8");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Authorization", "Client-ID " + clientID);
...

if (data != null) {
    try {
        String dataTypeS = DatatypeConverter.printHexBinary(data);
        long dataType_num = Long.parseLong(dataTypeS, 16);
        return dataType_num;
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
return 0;

final StringBuffer buffer = new StringBuffer();
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
String userpass = user + ":" + password;
String basicAuth = "Basic " + javax.xml.bind.DatatypeConverter.printBase64Binary(userpass.getBytes());
connection.setRequestProperty("Authorization", basicAuth);
final BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line = reader.readLine();
while (line != null) {
...