Example usage for java.util UUID getLeastSignificantBits

Introduction

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

Prototype

public long getLeastSignificantBits()

Source Link

Document

Returns the least significant 64 bits of this UUID's 128 bit value.

Usage

From source file:Main.java

public static void main(String[] args) {
    // creating UUID      
    UUID uid = UUID.randomUUID();

    // checking least significant bits
    System.out.println("Least significant bits: " + uid.getLeastSignificantBits());
}

From source file:Main.java

/**
 * Check whether the given parcelUuid can be converted to 16 bit bluetooth uuid.
 *
 * @param parcelUuid//  w  ww .  j  av  a2  s  . co m
 * @return true if the parcelUuid can be converted to 16 bit uuid, false otherwise.
 */
public static boolean is16BitUuid(ParcelUuid parcelUuid) {
    UUID uuid = parcelUuid.getUuid();
    if (uuid.getLeastSignificantBits() != BASE_UUID.getUuid().getLeastSignificantBits()) {
        return false;
    }
    return ((uuid.getMostSignificantBits() & 0xFFFF0000FFFFFFFFL) == 0x1000L);
}

From source file:Main.java

/**
 * Check whether the given parcelUuid can be converted to 32 bit bluetooth uuid.
 *
 * @param parcelUuid/*from  w  w  w .j  a v a  2  s .  co m*/
 * @return true if the parcelUuid can be converted to 32 bit uuid, false otherwise.
 */
public static boolean is32BitUuid(ParcelUuid parcelUuid) {
    UUID uuid = parcelUuid.getUuid();
    if (uuid.getLeastSignificantBits() != BASE_UUID.getUuid().getLeastSignificantBits()) {
        return false;
    }
    if (is16BitUuid(parcelUuid)) {
        return false;
    }
    return ((uuid.getMostSignificantBits() & 0xFFFFFFFFL) == 0x1000L);
}

From source file:Main.java

public static byte[] randomUUID() {
    UUID uuid = UUID.randomUUID();
    long hi = uuid.getMostSignificantBits();
    long lo = uuid.getLeastSignificantBits();
    return ByteBuffer.allocate(16).putLong(hi).putLong(lo).array();
}

From source file:Main.java

/**
 * Check if the specified UUID style is short style.
 *
 * @param src the UUID//from   w  w  w . ja v a  2s .c  om
 * @return true if the UUID is short style
 */
private static boolean isShortUuid(@NonNull final UUID src) {
    return (src.getMostSignificantBits() & 0xffff0000ffffffffL) == 0L && src.getLeastSignificantBits() == 0L;
}

From source file:Main.java

public static byte[] uuidToByteArray(UUID uuid) {
    long msb = uuid.getMostSignificantBits();
    long lsb = uuid.getLeastSignificantBits();
    byte[] buffer = new byte[16];

    for (int i = 0; i < 8; i++) {
        buffer[i] = (byte) (msb >>> 8 * (7 - i));
    }/*  www  .  ja va 2 s .co m*/
    for (int i = 8; i < 16; i++) {
        buffer[i] = (byte) (lsb >>> 8 * (7 - i));
    }

    return buffer;
}

From source file:Main.java

/**
 * Check if the specified UUID style is short style.
 *
 * @param src the UUID/* w ww  .  j a  v  a 2 s.  co m*/
 * @return true if the UUID is short style
 */
private static boolean isShortUuid(@NonNull final UUID src) {
    return ((src.getMostSignificantBits() & 0xffff0000ffffffffL) == 0L)
            && (src.getLeastSignificantBits() == 0L);
}

From source file:de.undercouch.bson4jackson.serializers.BsonUuidSerializer.java

/**
 * Utility routine for converting UUIDs to bytes in little endian format.
 * @param uuid The UUID to convert/*from ww w .ja  v a2 s  . c o  m*/
 * @return a byte array representing the UUID in little endian format
 */
private static byte[] uuidToLittleEndianBytes(UUID uuid) {
    long msb = uuid.getMostSignificantBits();
    long lsb = uuid.getLeastSignificantBits();
    byte[] buffer = new byte[16];

    for (int i = 0; i < 8; i++) {
        buffer[i] = (byte) (msb >>> 8 * i);
    }
    for (int i = 8; i < 16; i++) {
        buffer[i] = (byte) (lsb >>> 8 * (i - 16));
    }

    return buffer;
}

From source file:org.zht.framework.uuid.Base64UuidGenerator.java

private static String base64Uuid(UUID uuid) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return Base64.encodeBase64URLSafeString(bb.array());
}

From source file:com.images3.data.impl.ShortUUID.java

private static byte[] toByteArray(UUID uuid) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return bb.array();
}