Java Utililty Methods XML Data Type Converter

return (value != null) ? DatatypeConverter.printLong(value) : "x";

if (value == null || value.compareTo(BigInteger.ZERO) != 1)
    throw new IllegalArgumentException("Can't print integer value '" + value + "'!");
String val = DatatypeConverter.printInteger(value);
if (val.length() > 20)
    throw new IllegalArgumentException(
            "Can't print integer value '" + value + "'! The value exceeds maximal length of 20 digits.");
return val;

if (value == null || value.compareTo(BigDecimal.ZERO) != 1 || value.compareTo(BigDecimal.TEN.pow(2)) != -1)
    throw new IllegalArgumentException("Can't print decimal value '" + value + "'!");
else
    return DatatypeConverter.printDecimal(value.setScale(1, BigDecimal.ROUND_HALF_UP));

BigDecimal min = new BigDecimal("0.5");
BigDecimal max = new BigDecimal("9999");
if (value == null || value.compareTo(min) == -1 || value.compareTo(max) == 1)
    throw new IllegalArgumentException("Can't print decimal value '" + value + "'!");
else
    return printZahl62(value);

@SuppressWarnings("resource")
Scanner scanner = new Scanner(reader);
scanner.useDelimiter("\n");
StringBuilder builder = new StringBuilder();
boolean prefixFound = false;
String line;
while (scanner.hasNext()) {
    line = scanner.next();
...

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);
connection.setRequestMethod(method);
if (data != null) {
    connection.setDoInput(true);
...

try {
    ByteArrayOutputStream bao = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(bao);
    oos.writeObject(logic);
    oos.flush();
    return DatatypeConverter.printBase64Binary(bao.toByteArray());
} catch (IOException e) {
    throw new RuntimeException(e);
...

byte[] bytes = serializeToBytes(object);
return DatatypeConverter.printBase64Binary(bytes);

if (string == null) {
    return null;
try {
    InputStream raw = new ByteArrayInputStream(string.getBytes("UTF-8"));
    ByteArrayOutputStream deflated = new ByteArrayOutputStream();
    stream(raw, new DeflaterOutputStream(deflated, new Deflater(Deflater.BEST_COMPRESSION)));
    String base64 = DatatypeConverter.printBase64Binary(deflated.toByteArray());
...

return DatatypeConverter.parseDateTime(value);