Example usage for java.nio ByteBuffer wrap

Introduction

In this page you can find the example usage for java.nio ByteBuffer wrap.

Prototype

public static ByteBuffer wrap(byte[] array)

Source Link

Document

Creates a new byte buffer by wrapping the given byte array.

Usage

From source file:Main.java

private static String formatInts(byte[] data) {
    IntBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).asIntBuffer();

    StringBuilder sb = new StringBuilder(bb.capacity() * 3);

    while (bb.remaining() > 0) {
        sb.append(bb.get());/*from w  ww. j  a  v a  2  s . c  o m*/
        sb.append(',');
        sb.append('\n');
    }

    return sb.toString();
}

From source file:Main.java

private static String formatFloats(byte[] data) {
    FloatBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).asFloatBuffer();

    StringBuilder sb = new StringBuilder(bb.capacity() * 3);

    while (bb.remaining() > 0) {
        sb.append(String.format("%.4f", bb.get()));
        sb.append(',');
        sb.append('\n');
    }/*from w  w  w.ja  v  a 2 s . c o m*/

    return sb.toString();
}

From source file:Main.java

private static String formatShorts(byte[] data, boolean unsigned) {
    ShortBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer();

    StringBuilder sb = new StringBuilder(bb.capacity() * 3);

    while (bb.remaining() > 0) {
        if (unsigned) {
            sb.append(bb.get() & 0xffff);
        } else {/*from www.  j  a v a 2 s.  c o  m*/
            sb.append(bb.get());
        }
        sb.append(',');
        sb.append('\n');
    }

    return sb.toString();
}

From source file:Main.java

public static AdvertiseData createAllOffAdvertiseData() {
    byte[] manufacturerData = new byte[23];
    ByteBuffer bb = ByteBuffer.wrap(manufacturerData);
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.put((byte) 0x41);
    bb.put((byte) 0x6c);
    bb.put((byte) 0x6c);
    bb.put((byte) 0x4f);
    bb.put((byte) 0x66);
    bb.put((byte) 0x66);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);

    AdvertiseData.Builder builder = new AdvertiseData.Builder();
    builder.addManufacturerData(0x006d, manufacturerData);
    AdvertiseData adv = builder.build();
    return adv;//w  w w.  ja va2 s. co m
}

From source file:Main.java

public static int byteArrayToLeInt(byte[] b) {
    final ByteBuffer bb = ByteBuffer.wrap(b);
    bb.order(ByteOrder.LITTLE_ENDIAN);
    return bb.getInt();
}

From source file:Main.java

public static ByteBuffer someData() {
    byte[] bytes = new byte[10];
    deterministicDataSequence.nextBytes(bytes);
    return ByteBuffer.wrap(bytes);
}

From source file:Main.java

public static ByteBuffer lotsOfData() {
    byte[] bytes = new byte[150];
    deterministicDataSequence.nextBytes(bytes);
    return ByteBuffer.wrap(bytes);
}

From source file:Main.java

/** create AdvertiseDate for iBeacon */
public static AdvertiseData createEmployeeIDAdvertiseData(byte[] data, int length) {
    byte[] manufacturerData = new byte[23];
    ByteBuffer bb = ByteBuffer.wrap(manufacturerData);
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.put((byte) 0x4d);
    bb.put((byte) 0x44);
    bb.put((byte) 0x43);
    bb.put(data);/*from   w ww.  j  a va2 s .  c om*/
    for (int i = 0; i < length; i++) {
        bb.put((byte) 0x00);
    }

    AdvertiseData.Builder builder = new AdvertiseData.Builder();
    builder.addManufacturerData(0x006d, manufacturerData);
    AdvertiseData adv = builder.build();
    return adv;
}

From source file:Main.java

/** create AdvertiseDate for iBeacon */
public static AdvertiseData createAllOnAdvertiseData() {
    byte[] manufacturerData = new byte[23];
    ByteBuffer bb = ByteBuffer.wrap(manufacturerData);
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.put((byte) 0x41);
    bb.put((byte) 0x6c);
    bb.put((byte) 0x6c);
    bb.put((byte) 0x4f);
    bb.put((byte) 0x6e);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);

    AdvertiseData.Builder builder = new AdvertiseData.Builder();
    builder.addManufacturerData(0x006d, manufacturerData);
    AdvertiseData adv = builder.build();
    return adv;//from   ww  w . ja  v a 2s .  c  o m
}

From source file:Main.java

public static String decodeUnicode(String str) {
    Charset set = Charset.forName("UTF-16");
    Pattern p = Pattern.compile("\\\\u([0-9a-fA-F]{4})");
    Matcher m = p.matcher(str);/*w w w .  j  a  va2  s . c  o  m*/
    int start = 0;
    int start2;
    StringBuffer sb = new StringBuffer();
    while (m.find(start)) {
        start2 = m.start();
        if (start2 > start) {
            String seg = str.substring(start, start2);
            sb.append(seg);
        }
        String code = m.group(1);
        int i = Integer.valueOf(code, 16);
        byte[] bb = new byte[4];
        bb[0] = (byte) ((i >> 8) & 0xFF);
        bb[1] = (byte) (i & 0xFF);
        ByteBuffer b = ByteBuffer.wrap(bb);
        sb.append(String.valueOf(set.decode(b)).trim());
        start = m.end();
    }
    start2 = str.length();
    if (start2 > start) {
        String seg = str.substring(start, start2);
        sb.append(seg);
    }
    return sb.toString();
}