Java Utililty Methods SHA1

MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(text.getBytes("iso-8859-1"), 0, text.length());
byte[] sha1hash = md.digest();
return convertToHex(sha1hash);

String sen = "";
MessageDigest md = null;
try {
    md = MessageDigest.getInstance("SHA-1");
} catch (NoSuchAlgorithmException e) {
    e.printStackTrace();
BigInteger hash = new BigInteger(1, md.digest(texto.getBytes()));
...

return hash("SHA1", txt);

MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
return sha1.digest(utf8.getBytes("UTF-8"));

try {
    return hash(MessageDigest.getInstance("SHA1"), value);
} catch (NoSuchAlgorithmException e) {
    e.printStackTrace();
return null;

return byte2hex(digest(value, SHA1));

try (Formatter formatter = new Formatter()) {
    for (final byte b : messageDigest.digest()) {
        formatter.format("%02x", b);
    return formatter.toString();

try {
    final byte[] bytesOfMessage = text.getBytes();
    final MessageDigest md = MessageDigest.getInstance("SHA1");
    final byte[] digest = md.digest(bytesOfMessage);
    return base64encode(digest);
} catch (Exception e) {
    throw new RuntimeException();

try {
    return digest("SHA-1", bytes);
} catch (NoSuchAlgorithmException bytesz) {
return null;

return sha1AsBytes(input.getBytes(StandardCharsets.UTF_8));