Example usage for java.io DataInputStream DataInputStream

Introduction

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

Prototype

public DataInputStream(InputStream in)

Source Link

Document

Creates a DataInputStream that uses the specified underlying InputStream.

Usage

From source file:Util.PacketGenerator.java

public static void GeneratePacket() {
    try {/* w  w w.j a v  a2  s  .c o  m*/
        File file = new File(
                "D:\\Mestrado\\Prototipo\\Trace\\Los Angeles\\equinix-sanjose.dirA.20120920-130000.UTC.anon.pcap.csv");
        File newFile = new File("D:\\Mestrado\\SketchMatrix\\trunk\\Tracer_100_Pacotes.csv");

        FileInputStream tracesFIS = new FileInputStream(file);
        DataInputStream tracesDIS = new DataInputStream(tracesFIS);
        BufferedReader tracesBR = new BufferedReader(new InputStreamReader(tracesDIS));

        FileWriter tracesFW = new FileWriter(newFile);

        String tracesStr = tracesBR.readLine();

        Random random = new Random();

        long numberOfPackets = 0;

        while (tracesStr != null && numberOfPackets < 100) {

            String[] packetTokens = tracesStr.split(",");

            long time = Long.parseLong(packetTokens[0]);
            long srcIP = Long.parseLong(packetTokens[1]);
            long dstIP = Long.parseLong(packetTokens[2]);
            int srcPort = Integer.parseInt(packetTokens[3]);
            int dstPort = Integer.parseInt(packetTokens[4]);
            int payload = random.nextInt(256);

            tracesFW.write(
                    time + "," + srcIP + "," + dstIP + "," + srcPort + "," + dstPort + "," + payload + "\n");

            tracesStr = tracesBR.readLine();
            numberOfPackets++;
            if ((numberOfPackets % 100000) == 0) {
                System.out.println(numberOfPackets / 1000 + "K Pacotes");
            }
        }
        tracesBR.close();
        tracesDIS.close();
        tracesFIS.close();
        tracesFW.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

From source file:com.lunix.cheata.utils.file.FileManager.java

public static String readFile(String fileName) {
    try {// w  ww. ja va2 s. c  om
        File file = new File(getDir().getAbsolutePath(), fileName);
        String fileContents;
        BufferedReader reader = new BufferedReader(
                new InputStreamReader(new DataInputStream(new FileInputStream(file))));
        fileContents = FileUtils.readFileToString(file);
        reader.close();
        return fileContents;
    } catch (Exception e) {
        e.printStackTrace();
    }

    return "";
}

From source file:Main.java

public static short byteArrayToShort(byte[] input) {
    try {//from   w w w . j a  v  a  2s. c  o m
        ByteArrayInputStream bis = new ByteArrayInputStream(input);
        DataInputStream dis = new DataInputStream(bis);
        short numb = dis.readShort();
        dis.close();
        return numb;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:gaffer.utils.WritableToStringConverter.java

public static Writable deserialiseFromString(String serialised) throws IOException {
    // Convert the base64 string to a byte array
    byte[] b = Base64.decodeBase64(serialised);

    // Deserialise the writable from the byte array
    ByteArrayInputStream bais = new ByteArrayInputStream(b);
    DataInput in = new DataInputStream(bais);
    String className = Text.readString(in);
    try {//  w  w  w.  j  ava2 s.  com
        Writable writable = (Writable) Class.forName(className).newInstance();
        writable.readFields(in);
        return writable;
    } catch (InstantiationException e) {
        throw new IOException("Exception deserialising writable: " + e);
    } catch (IllegalAccessException e) {
        throw new IOException("Exception deserialising writable: " + e);
    } catch (ClassNotFoundException e) {
        throw new IOException("Exception deserialising writable: " + e);
    } catch (ClassCastException e) {
        throw new IOException("Exception deserialising writable: " + e);
    }
}

From source file:CounterServer.java

public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    HttpSession session = req.getSession(true);
    int count = 1;
    Integer i = (Integer) session.getAttribute(COUNTER_KEY);
    if (i != null) {
        count = i.intValue() + 5;/*ww  w .  j a va2  s.  com*/
    }
    session.setAttribute(COUNTER_KEY, new Integer(count));
    DataInputStream in = new DataInputStream(req.getInputStream());
    resp.setContentType("application/octet-stream");
    ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
    DataOutputStream out = new DataOutputStream(byteOut);
    out.writeInt(count);
    out.flush();
    byte[] buf = byteOut.toByteArray();
    resp.setContentLength(buf.length);
    ServletOutputStream servletOut = resp.getOutputStream();
    servletOut.write(buf);
    servletOut.close();
}

From source file:com.yattatech.io.ShalomFileReader.java

public Seminary read(String path) {

    Seminary seminary = null;//from  w ww .  ja v  a2 s  .c  om
    DataInputStream input = null;
    try {
        input = new DataInputStream(new FileInputStream(path));
        long checksum = input.readLong();
        input.readUTF(); // skip /n character
        String json = input.readUTF();
        long checksum2 = ChecksumCalculator.calculateChecksum(json);
        if (checksum == checksum2) {
            seminary = new Gson().fromJson(json, Seminary.class);
        }
    } catch (IOException ioe) {
        LOGGER.log(Level.SEVERE, ioe.getMessage());
    } finally {
        IOUtils.closeQuietly(input);
        return seminary;
    }
}

From source file:mr.robotto.engine.loader.file.MrMrrLoader.java

public MrMrrLoader(InputStream inputStream) {
    mStream = new DataInputStream(inputStream);
}

From source file:com.vaadin.testbench.testutils.ImageLoader.java

public static byte[] loadImageBytes(String folder, String filename) throws IOException {
    File imgFile = getImageFile(folder, filename);
    assertTrue(imgFile.exists());/*from  w  w w . jav  a  2s. c o m*/

    byte[] bytes = new byte[(int) imgFile.length()];
    new DataInputStream(new FileInputStream(imgFile)).readFully(bytes);
    return bytes;
}

From source file:com.mongodb.hadoop.util.BSONLoader.java

public BSONLoader(final InputStream input) {
    _input = new DataInputStream(input);
}

From source file:com.bigdata.dastor.db.RangeSliceReply.java

public static RangeSliceReply read(byte[] body) throws IOException {
    ByteArrayInputStream bufIn = new ByteArrayInputStream(body);
    DataInputStream dis = new DataInputStream(bufIn);
    int rowCount = dis.readInt();
    List<Row> rows = new ArrayList<Row>(rowCount);
    for (int i = 0; i < rowCount; i++) {
        rows.add(Row.serializer().deserialize(dis));
    }/*ww w .  j  av  a 2s .  co  m*/
    return new RangeSliceReply(rows);
}