Java Utililty Methods MD5 Sum

try {
    MessageDigest md5 = MessageDigest.getInstance("MD5");
    md5.update(b, 0, b.length);
    return toHexString(md5.digest());
} catch (NoSuchAlgorithmException e) {
    e.printStackTrace();
return "";
...

MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] md5raw = md5.digest(content);
return md5ConvertDigest(md5raw);

if (data == null)
    return "null";
try {
    MessageDigest var3 = MessageDigest.getInstance("MD5");
    var3.update(data);
    String s = (new BigInteger(1, var3.digest())).toString(16);
    while (s.length() < 32) {
        s = "0" + s;
...

try {
    MessageDigest md5 = MessageDigest.getInstance("MD5");
    md5.update(input, 0, length);
    return getHex(md5.digest());
} catch (NoSuchAlgorithmException e) {
    return null;

try {
    MessageDigest md5 = MessageDigest.getInstance("MD5");
    StringBuilder sb = new StringBuilder();
    for (byte t : md5.digest(par1Data)) {
        sb.append(Integer.toHexString(t & 0xFF));
    return sb.toString();
} catch (NoSuchAlgorithmException e) {
...

MessageDigest md = MessageDigest.getInstance("MD5");
byte[] bytes = new byte[1 << 13];
int numBytes;
try (InputStream is = Files.newInputStream(f.toPath())) {
    while ((numBytes = is.read(bytes)) != -1) {
        md.update(bytes, 0, numBytes);
BigInteger bigInt = new BigInteger(1, md.digest());
return bigInt.toString(16);

toHexChars(md5sum(f, digest, bbuf), cbuf);

return md5sum(new BufferedInputStream(new FileInputStream(file)));

return createMD5(new FileInputStream(file));

try {
    MessageDigest digest = MessageDigest.getInstance("MD5");
    FileInputStream in = new FileInputStream(library);
    DigestInputStream dis = new DigestInputStream(in, digest);
    byte[] buf = new byte[2048];
    int n;
    do {
        n = dis.read(buf);
...