Example usage for java.nio ByteBuffer get

Introduction

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

Prototype

public abstract byte get();

Source Link

Document

Returns the byte at the current position and increases the position by 1.

Usage

From source file:BufferConverter.java

public static void main(String[] arguments) {
    try {/*from  w  w  w  . j  ava2  s  . com*/
        String data = "friends.dat";
        FileInputStream inData = new FileInputStream(data);
        FileChannel inChannel = inData.getChannel();
        long inSize = inChannel.size();
        ByteBuffer source = ByteBuffer.allocate((int) inSize);
        inChannel.read(source, 0);
        source.position(0);
        for (int i = 0; source.remaining() > 0; i++)
            System.out.print(source.get() + " ");

        source.position(0);
        Charset ascii = Charset.forName("US-ASCII");
        CharsetDecoder toAscii = ascii.newDecoder();
        CharBuffer destination = toAscii.decode(source);
        destination.position(0);
        System.out.println("\n\nNew character data:");
        for (int i = 0; destination.remaining() > 0; i++)
            System.out.print(destination.get());
    } catch (Exception ioe) {
        System.out.println(ioe.getMessage());
    }
}

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From source file:Main.java

public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[] { 0, 0, 0, 0, 0, 0, 0, 'a' });
    bb.rewind();/*  w w  w .j av a2s  . c  o  m*/
    System.out.println("Byte Buffer");
    while (bb.hasRemaining())
        System.out.println(bb.position() + " -> " + bb.get());
    CharBuffer cb = ((ByteBuffer) bb.rewind()).asCharBuffer();
    System.out.println("Char Buffer");
    while (cb.hasRemaining())
        System.out.println(cb.position() + " -> " + cb.get());
    FloatBuffer fb = ((ByteBuffer) bb.rewind()).asFloatBuffer();
    System.out.println("Float Buffer");
    while (fb.hasRemaining())
        System.out.println(fb.position() + " -> " + fb.get());
    IntBuffer ib = ((ByteBuffer) bb.rewind()).asIntBuffer();
    System.out.println("Int Buffer");
    while (ib.hasRemaining())
        System.out.println(ib.position() + " -> " + ib.get());
    LongBuffer lb = ((ByteBuffer) bb.rewind()).asLongBuffer();
    System.out.println("Long Buffer");
    while (lb.hasRemaining())
        System.out.println(lb.position() + " -> " + lb.get());
    ShortBuffer sb = ((ByteBuffer) bb.rewind()).asShortBuffer();
    System.out.println("Short Buffer");
    while (sb.hasRemaining())
        System.out.println(sb.position() + " -> " + sb.get());
    DoubleBuffer db = ((ByteBuffer) bb.rewind()).asDoubleBuffer();
    System.out.println("Double Buffer");
    while (db.hasRemaining())
        System.out.println(db.position() + " -> " + db.get());
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    ReadableByteChannel channel = new FileInputStream("infile.dat").getChannel();

    ByteBuffer buf = ByteBuffer.allocateDirect(10);

    int numRead = 0;
    while (numRead >= 0) {
        buf.rewind();/*from w w  w.j a v  a2s.c o  m*/

        numRead = channel.read(buf);

        buf.rewind();

        for (int i = 0; i < numRead; i++) {
            byte b = buf.get();
        }
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    ReadableByteChannel channel = new FileInputStream("infile").getChannel();

    ByteBuffer buf = ByteBuffer.allocateDirect(10);

    int numRead = 0;
    while (numRead >= 0) {
        buf.rewind();// w  w w.ja  va2 s  .  c  om

        numRead = channel.read(buf);

        buf.rewind();

        for (int i = 0; i < numRead; i++) {
            byte b = buf.get();
        }
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    ReadableByteChannel channel = new FileInputStream("infile").getChannel();

    ByteBuffer buf = ByteBuffer.allocateDirect(10);

    int numRead = 0;
    while (numRead >= 0) {
        buf.rewind();//  w  w w  .  j  a  va2 s .  c o  m

        numRead = channel.read(buf);

        buf.rewind();

        // Read bytes from ByteBuffer; see also
        for (int i = 0; i < numRead; i++) {
            byte b = buf.get();
        }
    }
}

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From source file:ExplicitChannelRead.java

public static void main(String args[]) {
    FileInputStream fIn;/* w w  w  .  j  a v  a2s .  co  m*/
    FileChannel fChan;
    long fSize;
    ByteBuffer mBuf;

    try {
        fIn = new FileInputStream("test.txt");
        fChan = fIn.getChannel();
        fSize = fChan.size();
        mBuf = ByteBuffer.allocate((int) fSize);
        fChan.read(mBuf);
        mBuf.rewind();
        for (int i = 0; i < fSize; i++)
            System.out.print((char) mBuf.get());
        fChan.close();
        fIn.close();
    } catch (IOException exc) {
        System.out.println(exc);
        System.exit(1);
    }
}

---

From source file:MainClass.java

public static void main(String args[]) {
    FileInputStream fIn;/*  w  w  w  .  jav  a2s.  c  om*/
    FileChannel fChan;
    long fSize;
    ByteBuffer mBuf;

    try {
        fIn = new FileInputStream("test.txt");

        fChan = fIn.getChannel();

        fSize = fChan.size();

        mBuf = ByteBuffer.allocate((int) fSize);

        fChan.read(mBuf);

        mBuf.rewind();

        for (int i = 0; i < fSize; i++)
            System.out.print((char) mBuf.get());
        fChan.close();
        fIn.close();
    } catch (IOException exc) {
        System.out.println(exc);
    }
}

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From source file:edu.hawaii.soest.kilonalu.dvp2.DavisWxParser.java

public static void main(String[] args) {

    // Ensure we have a path to the binary file
    if (args.length != 1) {
        logger.info("Please provide the path to a file containing a binary LOOP packet.");
        System.exit(1);/*  ww w  .j  a  v a2  s  .  c  o  m*/
    } else {
        try {
            // open and read the file
            File packetFile = new File(args[0]);
            FileInputStream fis = new FileInputStream(packetFile);
            FileChannel fileChannel = fis.getChannel();
            ByteBuffer inBuffer = ByteBuffer.allocateDirect(8192);
            ByteBuffer packetBuffer = ByteBuffer.allocateDirect(8192);

            while (fileChannel.read(inBuffer) != -1 || inBuffer.position() > 0) {
                inBuffer.flip();
                packetBuffer.put(inBuffer.get());
                inBuffer.compact();
            }
            fileChannel.close();
            fis.close();
            packetBuffer.put(inBuffer.get());

            // create an instance of the parser, and report the field contents after parsing
            DavisWxParser davisWxParser = new DavisWxParser(packetBuffer);

            // Set up a simple logger that logs to the console
            PropertyConfigurator.configure(davisWxParser.getLogConfigurationFile());

            logger.info("loopID:                         " + davisWxParser.getLoopID());
            logger.info("barTrend:                       " + davisWxParser.getBarTrend());
            logger.info("barTrendAsString:               " + davisWxParser.getBarTrendAsString());
            logger.info("packetType:                     " + davisWxParser.getPacketType());
            logger.info("nextRecord:                     " + davisWxParser.getNextRecord());
            logger.info("barometer:                      " + davisWxParser.getBarometer());
            logger.info("insideTemperature:              " + davisWxParser.getInsideTemperature());
            logger.info("insideHumidity:                 " + davisWxParser.getInsideHumidity());
            logger.info("outsideTemperature:             " + davisWxParser.getOutsideTemperature());
            logger.info("windSpeed:                      " + davisWxParser.getWindSpeed());
            logger.info("tenMinuteAverageWindSpeed:      " + davisWxParser.getTenMinuteAverageWindSpeed());
            logger.info("windDirection:                  " + davisWxParser.getWindDirection());
            logger.info(
                    "extraTemperatures:              " + Arrays.toString(davisWxParser.getExtraTemperatures()));
            logger.info(
                    "soilTemperatures:               " + Arrays.toString(davisWxParser.getSoilTemperatures()));
            logger.info(
                    "leafTemperatures:               " + Arrays.toString(davisWxParser.getLeafTemperatures()));
            logger.info("outsideHumidity:                " + davisWxParser.getOutsideHumidity());
            logger.info(
                    "extraHumidities:                " + Arrays.toString(davisWxParser.getExtraHumidities()));
            logger.info("rainRate:                       " + davisWxParser.getRainRate());
            logger.info("uvRadiation:                    " + davisWxParser.getUvRadiation());
            logger.info("solarRadiation:                 " + davisWxParser.getSolarRadiation());
            logger.info("stormRain:                      " + davisWxParser.getStormRain());
            logger.info("currentStormStartDate:          " + davisWxParser.getCurrentStormStartDate());
            logger.info("dailyRain:                      " + davisWxParser.getDailyRain());
            logger.info("monthlyRain:                    " + davisWxParser.getMonthlyRain());
            logger.info("yearlyRain:                     " + davisWxParser.getYearlyRain());
            logger.info("dailyEvapoTranspiration:        " + davisWxParser.getDailyEvapoTranspiration());
            logger.info("monthlyEvapoTranspiration:      " + davisWxParser.getMonthlyEvapoTranspiration());
            logger.info("yearlyEvapoTranspiration:       " + davisWxParser.getYearlyEvapoTranspiration());
            logger.info("soilMoistures:                  " + Arrays.toString(davisWxParser.getSoilMoistures()));
            logger.info("leafWetnesses:                  " + Arrays.toString(davisWxParser.getLeafWetnesses()));
            logger.info("insideAlarm:                    " + davisWxParser.getInsideAlarm());
            logger.info("rainAlarm:                      " + davisWxParser.getRainAlarm());
            logger.info("outsideAlarms:                  " + davisWxParser.getOutsideAlarms());
            logger.info("extraTemperatureHumidityAlarms: " + davisWxParser.getExtraTemperatureHumidityAlarms());
            logger.info("soilLeafAlarms:                 " + davisWxParser.getSoilLeafAlarms());
            logger.info("transmitterBatteryStatus:       " + davisWxParser.getTransmitterBatteryStatus());
            logger.info("consoleBatteryVoltage:          " + davisWxParser.getConsoleBatteryVoltage());
            logger.info("forecastIconValues:             " + davisWxParser.getForecastAsString());
            logger.info("forecastRuleNumber:             " + davisWxParser.getForecastRuleNumberAsString());
            logger.info("timeOfSunrise:                  " + davisWxParser.getTimeOfSunrise());
            logger.info("timeOfSunset:                   " + davisWxParser.getTimeOfSunset());
            logger.info("recordDelimiter:                " + davisWxParser.getRecordDelimiterAsHexString());
            logger.info("crcChecksum:                    " + davisWxParser.getCrcChecksum());

        } catch (java.io.FileNotFoundException fnfe) {
            fnfe.printStackTrace();

        } catch (java.io.IOException ioe) {
            ioe.printStackTrace();

        }

    }
}

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From source file:Main.java

public static int getNalType(final ByteBuffer buffer) {
    return buffer.get() & 0x1f;
}

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From source file:Main.java

public static short getUnsignedByte(ByteBuffer bb) {
    return ((short) (bb.get() & 0xff));
}

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