Example usage for java.io DataOutputStream writeUTF

Introduction

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

Prototype

public final void writeUTF(String str) throws IOException 

Source Link

Document

Writes a string to the underlying output stream using modified UTF-8 encoding in a machine-independent manner.

Usage

From source file:webcamstream.ClientConnection.java

public static void main(String... a) throws IOException {
    Socket cs = new Socket("localhost", SERVER_PORT);
    System.out.println("socket created");
    DataInputStream ci = new DataInputStream(cs.getInputStream());
    DataOutputStream co = new DataOutputStream(cs.getOutputStream());

    //sending negotiaiton to the server
    Message m = new Message(FieldValues.STARTSTREAM.getValue(), FieldValues.FORMAT.getValue(), width, height);
    co.writeUTF(m.toJSONString());

    byte[] base64 = new byte[width * height * 3];
    while (true) {

        byte[] msgBytes = new byte[base64.length + 2048];
        ci.read(msgBytes);/*w w  w.j av  a2 s.  co  m*/
        System.out.println(new String(msgBytes));
        Message sm = Message.parseJSONString(new String(msgBytes).trim());

        //decode an image
        byte[] compressedImage = Base64.decodeBase64(base64);
        //decompressing an image       
        byte[] decompressedImage = Compressor.decompress(compressedImage);

        System.out.println(decompressedImage.length);
    }

}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);

    MessageDigest md = MessageDigest.getInstance("MD5");
    SomeObject testObject = new SomeObject();

    dos.writeInt(testObject.count);//  w  w  w.ja  v  a 2  s . c o m
    dos.writeLong(testObject.product);
    dos.writeDouble(testObject.stdDev);
    dos.writeUTF(testObject.name);
    dos.writeChar(testObject.delimiter);
    dos.flush();

    byte[] hashBytes = md.digest(baos.toByteArray());
    BigInteger testObjectHash = new BigInteger(hashBytes);

    System.out.println("Hash " + testObjectHash);

    dos.close();

}

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From source file:delete_tcp.java

public static void main(String ar[]) throws IOException {
    ServerSocket ss = new ServerSocket(9999);

    Socket s = ss.accept();// w  w  w.  ja va 2 s. com

    DataInputStream in = new DataInputStream(s.getInputStream());
    DataOutputStream out = new DataOutputStream(s.getOutputStream());

    String id = in.readUTF();

    ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");

    EmployeeJDBCTemplate employeeJDBCTemplate = (EmployeeJDBCTemplate) context.getBean("employeeJDBCTemplate");

    System.out.println("Deleting Records...");

    employeeJDBCTemplate.delete(Integer.parseInt(id));

    out.writeUTF("Success");

    s.close();

}

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From source file:com.splout.db.dnode.TCPStreamer.java

/**
 * This main method can be used for testing the TCP interface directly to a
 * local DNode. Will ask for protocol input from Stdin and print output to
 * Stdout//from w w  w.  j  a  va2s.c o  m
 */
public static void main(String[] args) throws UnknownHostException, IOException, SerializationException {
    SploutConfiguration config = SploutConfiguration.get();
    Socket clientSocket = new Socket("localhost", config.getInt(DNodeProperties.STREAMING_PORT));

    DataInputStream inFromServer = new DataInputStream(new BufferedInputStream(clientSocket.getInputStream()));
    DataOutputStream outToServer = new DataOutputStream(
            new BufferedOutputStream(clientSocket.getOutputStream()));

    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Enter tablespace: ");
    String tablespace = reader.readLine();

    System.out.println("Enter version number: ");
    long versionNumber = Long.parseLong(reader.readLine());

    System.out.println("Enter partition: ");
    int partition = Integer.parseInt(reader.readLine());

    System.out.println("Enter query: ");
    String query = reader.readLine();

    outToServer.writeUTF(tablespace);
    outToServer.writeLong(versionNumber);
    outToServer.writeInt(partition);
    outToServer.writeUTF(query);

    outToServer.flush();

    byte[] buffer = new byte[0];
    boolean read;
    do {
        read = false;
        int nBytes = inFromServer.readInt();
        if (nBytes > 0) {
            buffer = new byte[nBytes];
            int inRead = inFromServer.read(buffer);
            if (inRead > 0) {
                Object[] res = ResultSerializer.deserialize(ByteBuffer.wrap(buffer), Object[].class);
                read = true;
                System.out.println(Arrays.toString(res));
            }
        }
    } while (read);

    clientSocket.close();
}

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From source file:cacheservice.CacheServer.java

/**
 * @param args the command line arguments
 *///from  w  w  w . ja  v  a  2  s .  com
public static void main(String[] args) {
    // COMUNICACIN CON EL CLIENTE
    ServerSocket serverSocket;
    Socket socketCliente;
    DataInputStream in; //Flujo de datos de entrada
    DataOutputStream out; //Flujo de datos de salida
    String mensaje;
    int laTengoenCache = 0;

    //COMUNICACIN CON EL INDEX
    ServerSocket serverSocketIndex;
    Socket socketIndex;
    DataOutputStream outIndex;
    ObjectInputStream inIndex;
    String mensajeIndex;

    try {
        serverSocket = new ServerSocket(4444);
        System.out.print("SERVIDOR CACHE ACTIVO a la espera de peticiones");

        //MIENTRAS PERMANEZCA ACTIVO EL SERVIDOR CACHE ESPERAR? POR PETICIONES DE LOS CLIENTES
        while (true) {
            socketCliente = serverSocket.accept();
            in = new DataInputStream(socketCliente.getInputStream()); //Entrada de los mensajes del cliente
            mensaje = in.readUTF(); //Leo el mensaje enviado por el cliente

            System.out.println("\nHe recibido del cliente: " + mensaje); //Muestro el mensaje recibido por el cliente
            //int particionBuscada = seleccionarParticion(mensaje, tamanoCache, numeroParticiones); //Busco la particin
            //double tamanoParticion = Math.ceil( (double)tamanoCache / (double)numeroParticiones);

            //Thread hilo = new Hilo(mensaje,particionBuscada,cache.GetTable(),(int) tamanoParticion);
            //hilo.start();

            //RESPUESTA DEL SERVIDOR CACHE AL CLIENTE
            out = new DataOutputStream(socketCliente.getOutputStream());
            String respuesta = "Respuesta para " + mensaje;
            if (laTengoenCache == 1) {
                out.writeUTF(respuesta);
                System.out.println("\nTengo la respuesta. He respondido al cliente: " + respuesta);
            } else {
                out.writeUTF("miss");
                out.close();
                in.close();
                socketCliente.close();

                System.out.println("\nNo tengo la respuesta.");

                //LEER RESPUESTA DEL SERVIDOR INDEX
                serverSocketIndex = new ServerSocket(6666);
                socketIndex = serverSocketIndex.accept();
                inIndex = new ObjectInputStream(socketIndex.getInputStream());
                JSONObject mensajeRecibidoIndex = (JSONObject) inIndex.readObject();

                System.out.println("He recibido del SERVIDOR INDEX: " + mensajeRecibidoIndex);

                //outIndex.close();
                inIndex.close();
                socketIndex.close();

            }

        }
    } catch (Exception e) {
        System.out.print(e.getMessage());
    }
}

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From source file:WriteBinaryFile.java

private static void writeMovie(Product m, DataOutputStream out) throws Exception {
    out.writeUTF(m.title);
    out.writeInt(m.year);//from   w  w  w . ja va  2 s. co  m
    out.writeDouble(m.price);
}

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From source file:Main.java

public static void writeString(DataOutputStream out, String val) throws IOException {
    out.writeUTF(val);
    //we could easily come up with more efficient default encoding for string
}

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From source file:Main.java

public static void writeContatctInfo(String accountId, Vector contactInfo, File contactInfoFile)
        throws IOException {
    contactInfoFile.getParentFile().mkdirs();
    FileOutputStream contactFileOutputStream = new FileOutputStream(contactInfoFile);
    DataOutputStream out = new DataOutputStream(contactFileOutputStream);
    out.writeUTF((String) contactInfo.get(0));
    out.writeInt(((Integer) (contactInfo.get(1))).intValue());
    for (int i = 2; i < contactInfo.size(); ++i) {
        out.writeUTF((String) contactInfo.get(i));
    }/*w  ww  .  jav a  2  s .c  om*/
    out.close();
}

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From source file:org.apache.reef.io.data.loading.impl.DistributedDataSetPartitionSerializer.java

public static String serialize(final DistributedDataSetPartition partition) {
    try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
        final DataOutputStream daos = new DataOutputStream(baos);
        daos.writeUTF(partition.getPath());
        daos.writeUTF(partition.getLocation());
        daos.writeInt(partition.getDesiredSplits());
        return Base64.encodeBase64String(baos.toByteArray());
    } catch (final IOException e) {
        throw new RuntimeException("Unable to serialize distributed data partition", e);
    }/*from   ww w  . j a va  2 s  .  c o m*/
}

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From source file:Main.java

private static byte[] stringToBytes(String string) {
    if (string == null) {
        return null;
    }//from www.j a v a 2s  . com
    byte[] buffer = null;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    try {
        dos.writeUTF(string);
        buffer = baos.toByteArray();
    } catch (IOException ex) {
    } finally {
        try {
            baos.close();
            dos.close();
        } catch (IOException ex1) {
        }
        baos = null;
        dos = null;
    }
    return buffer;
}

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