Example usage for java.util UUID nameUUIDFromBytes

Introduction

In this page you can find the example usage for java.util UUID nameUUIDFromBytes.

Prototype

public static UUID nameUUIDFromBytes(byte[] name) 

Source Link

Document

Static factory to retrieve a type 3 (name based) UUID based on the specified byte array.

Usage

From source file:Main.java

public static void main(String[] args) {
    byte[] nbyte = { 10, 20, 30 };

    // creating UUID from byte     
    UUID uid = UUID.nameUUIDFromBytes(nbyte);

    // checking UUID value
    System.out.println("UUID value from byte: " + uid);
}

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From source file:com.my.quickstart.util.Digests.java

/**
 * ?UUIDsalt//from   w ww.ja  va 2 s  .c om
 * @return
 */
public static String generateUUIDSalt() {
    byte[] b = KeyGenerators.secureRandom(16).generateKey();
    String salt = UUID.nameUUIDFromBytes(b).toString();
    return salt;
}

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From source file:org.apache.nifi.registry.security.authorization.file.IdentifierUtil.java

static String getIdentifier(final String seed) {
    if (StringUtils.isBlank(seed)) {
        return null;
    }/*from   www.ja v  a  2 s . c  o  m*/

    return UUID.nameUUIDFromBytes(seed.getBytes(StandardCharsets.UTF_8)).toString();
}

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From source file:QRCode.java

public static String createQRCode(String arg) {
    int size = 125;
    String fileType = "png";
    File myFile = null;/*ww  w  .j a  v  a  2s  . c  om*/
    UUID uuid = UUID.nameUUIDFromBytes(arg.getBytes());

    try {
        myFile = File.createTempFile("temp-file-name", ".png");

        Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<EncodeHintType, ErrorCorrectionLevel>();
        hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix byteMatrix = qrCodeWriter.encode(uuid.toString(), BarcodeFormat.QR_CODE, size, size, hintMap);
        int CrunchifyWidth = byteMatrix.getWidth();
        BufferedImage image = new BufferedImage(CrunchifyWidth, CrunchifyWidth, BufferedImage.TYPE_INT_RGB);
        image.createGraphics();

        Graphics2D graphics = (Graphics2D) image.getGraphics();
        graphics.setColor(Color.WHITE);
        graphics.fillRect(0, 0, CrunchifyWidth, CrunchifyWidth);
        graphics.setColor(Color.BLACK);

        for (int i = 0; i < CrunchifyWidth; i++) {
            for (int j = 0; j < CrunchifyWidth; j++) {
                if (byteMatrix.get(i, j)) {
                    graphics.fillRect(i, j, 1, 1);
                }
            }
        }
        ImageIO.write(image, fileType, myFile);
        //System.out.println("\n\nYou have successfully created QR Code " + myFile.getCanonicalPath());
        return myFile.getCanonicalPath();
    } catch (WriterException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return null;
}

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From source file:org.usergrid.utils.CodecUtils.java

public static UUID decodeBase64UUID(String base64String) {
    byte[] bytes = base64.decode(base64String);
    return UUID.nameUUIDFromBytes(bytes);
}

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From source file:org.wso2.carbon.dataservices.core.odata.ODataUtils.java

/**
 * This method generates an unique ETag for each data row entry.
 *
 * @param tableName Name of the table//from  w  w w  . ja va2s  .c o  m
 * @param entry     Data row entry
 * @return E Tag
 */
public static String generateETag(String configID, String tableName, ODataEntry entry) {
    StringBuilder uniqueString = new StringBuilder();
    uniqueString.append(configID).append(tableName);
    for (String columnName : entry.getNames()) {
        uniqueString.append(columnName).append(entry.getValue(columnName));
    }
    return UUID.nameUUIDFromBytes((uniqueString.toString()).getBytes()).toString();
}

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From source file:Main.java

private static UUID getUuid(Context c) {
    final SharedPreferences prefs = c.getSharedPreferences(ID_PREFS_FILE, Context.MODE_PRIVATE);
    final String id = prefs.getString(ID_PREFS_DEVICE_ID, null);
    final UUID uuid;
    if (id != null) {
        uuid = UUID.fromString(id);
    } else {//from ww  w. j  a  v a  2 s .  c  om
        final String androidId = Secure.getString(c.getContentResolver(), Secure.ANDROID_ID);
        try {
            if (!BAD_UUID.equals(androidId)) {
                uuid = UUID.nameUUIDFromBytes(androidId.getBytes("utf8"));
            } else {
                final String deviceId = ((TelephonyManager) c.getSystemService(Context.TELEPHONY_SERVICE))
                        .getDeviceId();
                if (deviceId != null)
                    uuid = UUID.nameUUIDFromBytes(deviceId.getBytes("utf8"));
                else
                    uuid = UUID.randomUUID();
            }
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }
        prefs.edit().putString(ID_PREFS_DEVICE_ID, uuid.toString()).commit();
    }
    return uuid;
}

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From source file:lydichris.smashbracket.persistence.EntrantPersistence.java

public Entrant createEntrant(Entrant entrant) {
    UUID uuid = UUID.nameUUIDFromBytes((entrant.getTag() + entrant.getTournamentUuid()).getBytes());
    String SQL = "insert into entrants (uuid, tournament_uuid, user_uuid, tag, seed) values (?, ?, ?, ?, ?)";
    entrant.setUuid(uuid.toString());//from ww w  .j  a  v  a  2  s  .c om
    jdbcTemplateObject.update(SQL, entrant.getUuid(), entrant.getTournamentUuid(), entrant.getUserUuid(),
            entrant.getTag(), entrant.getSeed());
    return entrant;
}

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From source file:org.apache.somewhere.general.BlankNodeImpl.java

BlankNodeImpl(String identifier) {
    // Mange the identifier with an internal startng point to produce a type 3 UUID. 
    uuid = UUID.nameUUIDFromBytes((SALT.toString() + ":" + identifier).getBytes(StandardCharsets.US_ASCII));
}

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From source file:com.chiorichan.util.WebFunc.java

public static String createGUID(String seed) {
    if (seed == null)
        seed = "";

    byte[] bytes;
    try {/*w ww .  j  a v  a 2s . com*/
        bytes = seed.getBytes("ISO-8859-1");
    } catch (UnsupportedEncodingException e) {
        bytes = new byte[0];
    }

    byte[] bytesScrambled = new byte[0];

    for (byte b : bytes) {
        byte[] tbyte = new byte[2];
        new Random().nextBytes(bytes);

        tbyte[0] = (byte) (b + tbyte[0]);
        tbyte[1] = (byte) (b + tbyte[1]);

        bytesScrambled = ArrayUtils.addAll(bytesScrambled, tbyte);
    }

    return "{" + UUID.nameUUIDFromBytes(bytesScrambled).toString() + "}";
}

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