Example usage for java.io DataOutputStream DataOutputStream

Introduction

In this page you can find the example usage for java.io DataOutputStream DataOutputStream.

Prototype

public DataOutputStream(OutputStream out) 

Source Link

Document

Creates a new data output stream to write data to the specified underlying output stream.

Usage

From source file:J2MEWriteReadMixedDataTypesExample.java

public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
        destroyApp(true);/*from ww w.  ja v a2  s  . c  o  m*/
        notifyDestroyed();
    } else if (command == start) {
        try {
            recordstore = RecordStore.openRecordStore("myRecordStore", true);
            byte[] outputRecord;
            String outputString = "First Record";
            int outputInteger = 15;
            boolean outputBoolean = true;
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            DataOutputStream outputDataStream = new DataOutputStream(outputStream);
            outputDataStream.writeUTF(outputString);
            outputDataStream.writeBoolean(outputBoolean);
            outputDataStream.writeInt(outputInteger);
            outputDataStream.flush();
            outputRecord = outputStream.toByteArray();
            recordstore.addRecord(outputRecord, 0, outputRecord.length);
            outputStream.reset();
            outputStream.close();
            outputDataStream.close();
            String inputString = null;
            int inputInteger = 0;
            boolean inputBoolean = false;
            byte[] byteInputData = new byte[100];
            ByteArrayInputStream inputStream = new ByteArrayInputStream(byteInputData);
            DataInputStream inputDataStream = new DataInputStream(inputStream);
            for (int x = 1; x <= recordstore.getNumRecords(); x++) {
                recordstore.getRecord(x, byteInputData, 0);
                inputString = inputDataStream.readUTF();
                inputBoolean = inputDataStream.readBoolean();
                inputInteger = inputDataStream.readInt();
                inputStream.reset();
            }
            inputStream.close();
            inputDataStream.close();
            alert = new Alert("Reading", inputString + " " + inputInteger + " " + inputBoolean, null,
                    AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
            recordstore.closeRecordStore();
            if (RecordStore.listRecordStores() != null) {
                RecordStore.deleteRecordStore("myRecordStore");
            }
        } catch (Exception error) {
            alert = new Alert("Error Removing", error.toString(), null, AlertType.WARNING);
            alert.setTimeout(Alert.FOREVER);
            display.setCurrent(alert);
        }
    }
}

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From source file:io.dacopancm.socketdcm.net.StreamSocket.java

public void handle() {
    try {//from ww w  .  ja  v  a  2  s .  c  om

        if (ConectType.GET_STREAMLIST.name().equalsIgnoreCase(method)) {
            DataOutputStream dOut = new DataOutputStream(sock.getOutputStream());
            DataInputStream dIn = new DataInputStream(sock.getInputStream());

            String files = HelperUtil.toJSON(mainApp.getStreamFilesList().toArray());

            dOut.writeUTF(files);
            dOut.flush(); // Send off the data
            dOut.close();
        } else if (ConectType.GET_STREAM.name().equalsIgnoreCase(method)) {
            DataOutputStream dOut = new DataOutputStream(sock.getOutputStream());
            DataInputStream dIn = new DataInputStream(sock.getInputStream());

            boolean player = mainApp.playStream(streamid);

            dOut.writeUTF("" + (player ? HelperUtil.VLC_SRV_PORT : player));
            dOut.flush(); // Send off the data
            dOut.close();

        }
    } catch (IOException ex) {
        HelperUtil.showErrorB("No se pudo establecer conexin");
        try {
            if (sock != null) {
                sock.close();
            }
        } catch (IOException e) {
        }
    }
}

---

From source file:com.ning.arecibo.util.timeline.times.TimesAndSamplesCoder.java

public static byte[] combineTimesAndSamples(final byte[] times, final byte[] samples) {
    final int totalSamplesSize = 4 + times.length + samples.length;
    final ByteArrayOutputStream baStream = new ByteArrayOutputStream(totalSamplesSize);
    final DataOutputStream outputStream = new DataOutputStream(baStream);
    try {/*  w ww . j  a v a 2s  . c  om*/
        outputStream.writeInt(times.length);
        outputStream.write(times);
        outputStream.write(samples);
        outputStream.flush();
        return baStream.toByteArray();
    } catch (IOException e) {
        throw new IllegalStateException(String.format(
                "Exception reading timeByteCount in TimelineChunkMapper.map() for times %s, samples %s",
                Hex.encodeHex(times), Hex.encodeHex(samples)), e);
    }
}

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From source file:gribbit.util.RequestBuilder.java

/**
 * Make a GET or POST request, handling up to 6 redirects, and return the response. If isBinaryResponse is true,
 * returns a byte[] array, otherwise returns the response as a String.
 *//* w ww  .  j  a  va  2 s . c  o m*/
private static Object makeRequest(String url, String[] keyValuePairs, boolean isGET, boolean isBinaryResponse,
        int redirDepth) {
    if (redirDepth > 6) {
        throw new IllegalArgumentException("Too many redirects");
    }
    HttpURLConnection connection = null;
    try {
        // Add the URL query params if this is a GET request
        String reqURL = isGET ? url + "?" + WebUtils.buildQueryString(keyValuePairs) : url;
        connection = (HttpURLConnection) new URL(reqURL).openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setInstanceFollowRedirects(false);
        connection.setRequestMethod(isGET ? "GET" : "POST");
        connection.setUseCaches(false);
        connection.setRequestProperty("User-Agent",
                "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "
                        + "Chrome/43.0.2357.125 Safari/537.36");
        if (!isGET) {
            // Send the body if this is a POST request
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setRequestProperty("charset", "utf-8");
            String params = WebUtils.buildQueryString(keyValuePairs);
            connection.setRequestProperty("Content-Length", Integer.toString(params.length()));
            try (DataOutputStream w = new DataOutputStream(connection.getOutputStream())) {
                w.writeBytes(params);
                w.flush();
            }
        }
        if (connection.getResponseCode() == HttpResponseStatus.FOUND.code()) {
            // Follow a redirect. For safety, the params are not passed on, and the method is forced to GET.
            return makeRequest(connection.getHeaderField("Location"), /* keyValuePairs = */null, /* isGET = */
                    true, isBinaryResponse, redirDepth + 1);
        } else if (connection.getResponseCode() == HttpResponseStatus.OK.code()) {
            // For 200 OK, return the text of the response
            if (isBinaryResponse) {
                ByteArrayOutputStream output = new ByteArrayOutputStream(32768);
                IOUtils.copy(connection.getInputStream(), output);
                return output.toByteArray();
            } else {
                StringWriter writer = new StringWriter(1024);
                IOUtils.copy(connection.getInputStream(), writer, "UTF-8");
                return writer.toString();
            }
        } else {
            throw new IllegalArgumentException(
                    "Got non-OK HTTP response code: " + connection.getResponseCode());
        }
    } catch (Exception e) {
        throw new IllegalArgumentException(
                "Exception during " + (isGET ? "GET" : "POST") + " request: " + e.getMessage(), e);
    } finally {
        if (connection != null) {
            try {
                connection.disconnect();
            } catch (Exception e) {
            }
        }
    }
}

---

From source file:Main.java

public static byte[] convertToB64(float[] a) {
    ByteArrayOutputStream os = new ByteArrayOutputStream(a.length * 4 + 2);
    DataOutputStream dou = new DataOutputStream(os);
    try {/*from w  w  w. j a v a2  s . c o  m*/
        for (int i = 0; i < a.length; i++)
            dou.writeFloat(a[i]);
        return encode(os.toByteArray());
    } catch (Exception s) {
        return null;
    }
}

---

From source file:com.ibm.mobilefirst.mobileedge.utils.RequestUtils.java

public static void executeTrainRequest(String name, String uuid, List<AccelerometerData> accelerometerData,
        List<GyroscopeData> gyroscopeData, RequestResult requestResult) throws IOException {

    URL url = new URL("https://medge.mybluemix.net/alg/train");

    HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
    conn.setReadTimeout(5000);//from  ww  w.j  av  a2  s . com
    conn.setConnectTimeout(10000);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", "application/json");

    conn.setDoInput(true);
    conn.setDoOutput(true);

    JSONObject jsonToSend = createTrainBodyJSON(name, uuid, accelerometerData, gyroscopeData);

    OutputStream outputStream = conn.getOutputStream();
    DataOutputStream wr = new DataOutputStream(outputStream);
    wr.writeBytes(jsonToSend.toString());
    wr.flush();
    wr.close();

    outputStream.close();

    String response = "";

    int responseCode = conn.getResponseCode();

    //Log.e("BBB2","" + responseCode);

    if (responseCode == HttpsURLConnection.HTTP_OK) {
        String line;
        BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        while ((line = br.readLine()) != null) {
            response += line;
        }
    } else {
        response = "{}";
    }

    handleResponse(response, requestResult);
}

---

From source file:io.druid.data.input.impl.prefetch.RetryingInputStreamTest.java

@Before
public void setup() throws IOException {
    testFile = temporaryFolder.newFile();

    try (FileOutputStream fis = new FileOutputStream(testFile);
            GZIPOutputStream gis = new GZIPOutputStream(fis);
            DataOutputStream dis = new DataOutputStream(gis)) {
        for (int i = 0; i < 10000; i++) {
            dis.writeInt(i);//from w  w  w  .  j  a  va 2  s  .  c om
        }
    }

    throwError = false;

    final InputStream retryingInputStream = new RetryingInputStream<>(testFile, new ObjectOpenFunction<File>() {
        @Override
        public InputStream open(File object) throws IOException {
            return new TestInputStream(new FileInputStream(object));
        }

        @Override
        public InputStream open(File object, long start) throws IOException {
            final FileInputStream fis = new FileInputStream(object);
            Preconditions.checkState(fis.skip(start) == start);
            return new TestInputStream(fis);
        }
    }, e -> e instanceof IOException, MAX_RETRY);

    inputStream = new DataInputStream(new GZIPInputStream(retryingInputStream));

    throwError = true;
}

---

From source file:ml.shifu.guagua.io.Bzip2BytableSerializer.java

/**
 * Serialize from object to bytes.//from  w ww  .j a  v a2 s  . c  o  m
 * 
 * @throws NullPointerException
 *             if result is null.
 * @throws GuaguaRuntimeException
 *             if any io exception.
 */
@Override
public byte[] objectToBytes(RESULT result) {
    ByteArrayOutputStream out = null;
    DataOutputStream dataOut = null;
    try {
        out = new ByteArrayOutputStream();
        OutputStream gzipOutput = new BZip2CompressorOutputStream(out);
        dataOut = new DataOutputStream(gzipOutput);
        result.write(dataOut);
    } catch (IOException e) {
        throw new GuaguaRuntimeException(e);
    } finally {
        if (dataOut != null) {
            try {
                dataOut.close();
            } catch (IOException e) {
                throw new GuaguaRuntimeException(e);
            }
        }
    }
    return out.toByteArray();
}

---

From source file:com.ning.arecibo.util.timeline.times.TimelineCoderImpl.java

/**
 * Convert the array of unix times to a compressed timeline, and return the byte array
 * representing that compressed timeline
 * @param times an int array giving the unix times to be compressed
 * @return the compressed timeline/*w  w w.  jav a2 s  .c  o  m*/
 */
@Override
public byte[] compressDateTimes(final List<DateTime> times) {
    final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    final DataOutputStream dataStream = new DataOutputStream(outputStream);
    try {
        int lastTime = 0;
        int lastDelta = 0;
        int repeatCount = 0;
        for (DateTime time : times) {
            final int newTime = DateTimeUtils.unixSeconds(time);
            if (lastTime == 0) {
                lastTime = newTime;
                writeTime(0, lastTime, dataStream);
                continue;
            } else if (newTime < lastTime) {
                log.warn("In TimelineCoder.compressTimes(), newTime {} is < lastTime {}; ignored", newTime,
                        lastTime);
                continue;
            }
            final int delta = newTime - lastTime;
            final boolean deltaWorks = delta <= TimelineOpcode.MAX_DELTA_TIME;
            final boolean sameDelta = repeatCount > 0 && delta == lastDelta;
            if (deltaWorks) {
                if (sameDelta) {
                    repeatCount++;
                    if (repeatCount == MAX_SHORT_REPEAT_COUNT) {
                        writeRepeatedDelta(delta, repeatCount, dataStream);
                        repeatCount = 0;
                    }
                } else {
                    if (repeatCount > 0) {
                        writeRepeatedDelta(lastDelta, repeatCount, dataStream);
                    }
                    repeatCount = 1;
                }
                lastDelta = delta;
            } else {
                if (repeatCount > 0) {
                    writeRepeatedDelta(lastDelta, repeatCount, dataStream);
                }
                writeTime(0, newTime, dataStream);
                repeatCount = 0;
                lastDelta = 0;
            }
            lastTime = newTime;
        }
        if (repeatCount > 0) {
            writeRepeatedDelta(lastDelta, repeatCount, dataStream);
        }
        dataStream.flush();
        return outputStream.toByteArray();
    } catch (IOException e) {
        log.error("Exception compressing times list of length {}", times.size(), e);
        return null;
    }
}

---

From source file:eu.stratosphere.pact.runtime.task.util.SerializationCopier.java

/**
 * Creates a SerializationCopier with an byte array of initial size 1024 byte.
 *///from ww w .j a  va  2  s.  c  o  m
public SerializationCopier() {
    serializedCopy = new byte[1024];
    baos = new ByteArrayOutputStream();
    dos = new DataOutputStream(baos);
    bais = new ByteArrayInputStream(serializedCopy);
    dis = new DataInputStream(bais);
}

---

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