Example usage for java.nio ByteBuffer putInt

Introduction

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

Prototype

public abstract ByteBuffer putInt(int value);

Source Link

Document

Writes the given int to the current position and increases the position by 4.

Usage

From source file:MainClass.java

public static void main(String[] args) {
    try {/*w w  w  .  j  av a  2  s.co  m*/
        File aFile = new File("test.txt");

        FileOutputStream outputFile = null;
        outputFile = new FileOutputStream(aFile, true);
        FileChannel outChannel = outputFile.getChannel();

        ByteBuffer buf = ByteBuffer.allocate(200);

        buf.putInt(10).asCharBuffer().put("www.java2s.com");

        buf.position(10).flip();
        outChannel.write(buf);
        buf.clear();

        outputFile.close();

    } catch (Exception e) {
        e.printStackTrace();

    }

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer buf = ByteBuffer.allocate(100);

    // Put values of different types
    buf.putInt(123);

    // Reset position for reading
    buf.flip();//from ww  w.  ja  v  a2 s .  c om

    // Retrieve the values
    int i = buf.getInt();

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putInt(123);

    System.out.println(Arrays.toString(bbuf.array()));
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {

    DatagramChannel channel = DatagramChannel.open();
    SocketAddress address = new InetSocketAddress(0);
    DatagramSocket socket = channel.socket();
    socket.bind(address);//from  ww  w .  ja  va 2  s  . c o m

    SocketAddress server = new InetSocketAddress("time-a.nist.gov", 37);
    channel.connect(server);

    ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.order(ByteOrder.BIG_ENDIAN);
    // send a byte of data to the server
    buffer.put((byte) 0);
    buffer.flip();
    channel.write(buffer);

    // get the buffer ready to receive data
    buffer.clear();
    // fill the first four bytes with zeros
    buffer.putInt(0);
    channel.read(buffer);
    buffer.flip();

    // convert seconds since 1900 to a java.util.Date
    long secondsSince1900 = buffer.getLong();
    long differenceBetweenEpochs = 2208988800L;
    long secondsSince1970 = secondsSince1900 - differenceBetweenEpochs;
    long msSince1970 = secondsSince1970 * 1000;
    Date time = new Date(msSince1970);

    System.out.println(time);
}

From source file:io.pcp.parfait.dxm.PcpMmvWriter.java

public static void main(String[] args) throws IOException {
    PcpMmvWriter bridge;/*  w ww. ja v a  2 s  .  c  o  m*/

    if (args.length == 0) {
        // use $PCP_PMDAS_DIR/mmv/mmvdump (no args) as diagnostic tool
        bridge = new PcpMmvWriter("test", IdentifierSourceSet.DEFAULT_SET);
    } else {
        bridge = new PcpMmvWriter(new File(args[0]), IdentifierSourceSet.DEFAULT_SET);
    }

    // Automatically uses default int handler
    bridge.addMetric(MetricName.parse("sheep[baabaablack].bagsfull.count"), Semantics.COUNTER,
            ONE.multiply(1000), 3);

    // Automatically uses default boolean-to-int handler
    bridge.addMetric(MetricName.parse("sheep[baabaablack].bagsfull.haveany"), Semantics.INSTANT, null,
            new AtomicBoolean(true));
    bridge.addMetric(MetricName.parse("sheep[limpy].bagsfull.haveany"), Semantics.INSTANT, null,
            new AtomicBoolean(false));

    // Automatically uses default long handler
    bridge.addMetric(MetricName.parse("sheep[insomniac].jumps"), Semantics.COUNTER, ONE, 12345678901234L);

    // Automatically uses default double handler
    bridge.addMetric(MetricName.parse("sheep[limpy].legs.available"), Semantics.DISCRETE, ONE, 0.75);

    // Uses this class' custom String handler
    bridge.addMetric(MetricName.parse("sheep[limpy].jumpitem"), Semantics.DISCRETE, null, "fence");

    // addMetric(GregorianCalendar) would fail, as there's no handler registered by default for
    // GregorianCalendars; use a custom one which puts the year as an int
    bridge.addMetric(MetricName.parse("sheep[insomniac].lastjumped"), Semantics.INSTANT, null,
            new GregorianCalendar(), new AbstractTypeHandler<GregorianCalendar>(MmvMetricType.I32, 4) {
                public void putBytes(ByteBuffer buffer, GregorianCalendar value) {
                    buffer.putInt(value.get(GregorianCalendar.YEAR));
                }
            });

    // addMetric(Date) would fail, as there's no handler registered; register one for all date
    // types from now on
    bridge.registerType(Date.class, new AbstractTypeHandler<Date>(MmvMetricType.I64, 8) {
        public void putBytes(ByteBuffer buffer, Date value) {
            buffer.putLong(value.getTime());
        }
    });
    // These will both use the handler we just registered
    bridge.addMetric(MetricName.parse("cow.how.now"), Semantics.INSTANT, null, new Date());
    bridge.addMetric(MetricName.parse("cow.how.then"), Semantics.INSTANT, null,
            new GregorianCalendar(1990, 1, 1, 12, 34, 56).getTime());

    // Uses units
    bridge.addMetric(MetricName.parse("cow.bytes.total"), Semantics.COUNTER, BYTE, 10000001);
    bridge.addMetric(MetricName.parse("cow.bytes.rate"), Semantics.INSTANT, BYTE.multiply(1024).divide(SECOND),
            new Date());
    bridge.addMetric(MetricName.parse("cow.bytes.chewtime"), Semantics.INSTANT, HOUR.divide(BYTE), 7);
    bridge.addMetric(MetricName.parse("cow.bytes.jawmotion"), Semantics.INSTANT, KILO(HERTZ), 0.5);

    // Set up some help text
    bridge.setInstanceDomainHelpText("sheep", "sheep in the paddock",
            "List of all the sheep in the paddock. Includes 'baabaablack', 'insomniac' (who likes to jump fences), and 'limpy' the three-legged wonder sheep.");
    bridge.setMetricHelpText("sheep.jumps", "# of jumps done",
            "Number of times the sheep has jumped over its jumpitem");

    // All the metrics are added; write the file
    bridge.start();
    // Metrics are visible to the agent from this point on

    // Sold a bag! Better update the count
    bridge.updateMetric(MetricName.parse("sheep[baabaablack].bagsfull.count"), 2);
    // The fence broke! Need something new to jump over
    bridge.updateMetric(MetricName.parse("sheep[limpy].jumpitem"), "Honda Civic");
    // Values will be reflected in the agent immediately
}

From source file:Main.java

public static void putUnsignedInt(ByteBuffer bb, long value) {
    bb.putInt((int) (value & 0xffffffffL));
}

From source file:Main.java

public static byte[] convertintToBytes(final int i) {
    ByteBuffer bb = ByteBuffer.allocate(4);
    bb.putInt(i);
    return bb.array();
}

From source file:Main.java

public static void putUnsignedInt(final ByteBuffer pByteBuffer, final long pValue) {
    pByteBuffer.putInt((int) (pValue & 0xFFFFFFFFL));
}

From source file:Main.java

public static byte[] toArray(int value) {
    ByteBuffer buffer = ByteBuffer.allocate(4);
    buffer.order(ByteOrder.LITTLE_ENDIAN);
    buffer.putInt(value);
    return buffer.array();
}

From source file:Main.java

/**
 * Converts an int value into an array of 4 bytes.
 *
 * @param x The int./*from ww  w  . j ava  2s . com*/
 * @return The bytes.
 */
public static byte[] intToBytes(final int x) {
    final ByteBuffer buffer = ByteBuffer.allocate(4);
    buffer.putInt(x);
    return buffer.array();
}