Example usage for java.util UUID randomUUID

Introduction

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

Prototype

public static UUID randomUUID()

Source Link

Document

Static factory to retrieve a type 4 (pseudo randomly generated) UUID.

Usage

From source file:com.scf.utils.UUIDUtilies.java

public static String uuid() {
    UUID uuid = UUID.randomUUID();
    return uuid.toString();
}

From source file:Main.java

public static String createUUID() {
    return UUID.randomUUID().toString().replace("-", "");
}

From source file:Main.java

public static String uploadFile(File file, String RequestURL) {
    String BOUNDARY = UUID.randomUUID().toString();
    String PREFIX = "--", LINE_END = "\r\n";
    String CONTENT_TYPE = "multipart/form-data";

    try {//  w  w  w . j  ava  2  s  .c om
        URL url = new URL(RequestURL);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(TIME_OUT);
        conn.setConnectTimeout(TIME_OUT);
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Charset", CHARSET);
        conn.setRequestProperty("connection", "keep-alive");
        conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);
        if (file != null) {

            OutputStream outputSteam = conn.getOutputStream();

            DataOutputStream dos = new DataOutputStream(outputSteam);
            StringBuffer sb = new StringBuffer();
            sb.append(PREFIX);
            sb.append(BOUNDARY);
            sb.append(LINE_END);

            sb.append("Content-Disposition: form-data; name=\"img\"; filename=\"" + file.getName() + "\""
                    + LINE_END);
            sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINE_END);
            sb.append(LINE_END);
            dos.write(sb.toString().getBytes());
            InputStream is = new FileInputStream(file);
            byte[] bytes = new byte[1024];
            int len = 0;
            while ((len = is.read(bytes)) != -1) {
                dos.write(bytes, 0, len);
            }
            is.close();
            dos.write(LINE_END.getBytes());
            byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
            dos.write(end_data);
            dos.flush();

            int res = conn.getResponseCode();
            Log.e(TAG, "response code:" + res);
            if (res == 200) {
                return SUCCESS;
            }
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return FAILURE;
}

From source file:Main.java

protected static String generateRandomBlobNameWithPrefix(String prefix) {
    if (prefix == null) {
        prefix = "";
    }//from  w  w  w .  jav  a 2s.  co m
    String blobName = prefix + UUID.randomUUID().toString();
    return blobName.replace("-", "");
}

From source file:co.runrightfast.core.utils.UUIDUtils.java

/**
 *
 * @return 32 char UUID
 */
static String uuid() {
    return StringUtils.remove(UUID.randomUUID().toString(), '-');
}

From source file:Main.java

/**
 * Returns a string with random characters.
 *
 * @return a string with random alpha-numeric characters.s
 */// ww w.  java  2  s  .co m
public static String generateRandomString() {
    UUID uuid = UUID.randomUUID();
    return String.valueOf(uuid);
}

From source file:Main.java

public static String getGcmKey(final Context context, final String accountName) {
    SharedPreferences sp = getSharedPreferences(context);
    String gcmKey = sp.getString(makeAccountSpecificPrefKey(accountName, PREFIX_PREF_GCM_KEY), null);

    // if there is no current GCM key, generate a new random one
    if (TextUtils.isEmpty(gcmKey)) {
        gcmKey = UUID.randomUUID().toString();
        setGcmKey(context, accountName, gcmKey);
    }/*www  . j a va  2  s.  co m*/

    return gcmKey;
}

From source file:com.scf.utils.UUIDUtilies.java

public static String base64Uuid() {
    UUID uuid = UUID.randomUUID();
    return base64Uuid(uuid);
}

From source file:Main.java

/**
 * <pre>/*from  ww w .ja v a  2 s. co m*/
 * Like {@link #putToCommonBundle(String, Object)} but does not require a key. The key is generated uniquely and returned.
 * </pre>
 */
public static String putToCommonBundle(Object value) {
    String key = UUID.randomUUID().toString();
    sCommonBundle.put(key, value);
    return key;
}

From source file:com.bootcamp.utils.IdGen.java

/**
 * ?JDKUUID, Random?, -./* ww w  .ja  va  2 s  .  c  o m*/
 */
public static String uuid() {
    return UUID.randomUUID().toString().replaceAll("-", "");
}