Examples of java.io.DataOutputStream

java.io.DataOutputStream
DataOutputStream is a filter class which can write typed data to a Stream. Typically, this stream can be read in by a DataInputStream. Types that can be written include byte, 16-bit short, 32-bit int, 32-bit float, 64-bit long, 64-bit double, byte strings, and UTF Strings. @see DataInputStream

        try{
          socket.connect( new InetSocketAddress( _address, 2190 ), 5000 );
          
          socket.setSoTimeout( 5000 );
  
          DataOutputStream dos = new DataOutputStream( socket.getOutputStream());
          
          byte[]  beacon_out = _tivo_manager.encodeBeacon( false, 0 );
          
          dos.writeInt( beacon_out.length );    
        
          dos.write( beacon_out );        
            
          DataInputStream dis = new DataInputStream( socket.getInputStream());
          
          int len = dis.readInt();

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       DHTTransportContact  contact )
     {     
    try{
         ByteArrayOutputStream  baos = new ByteArrayOutputStream();
         
         DataOutputStream  dos = new DataOutputStream(baos);
         
         dos.writeByte( 0 );  // version 
         
         contact.exportContact( dos );
         
         dos.close();
         
        return( baos.toByteArray());


    }catch( Throwable e ){

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      DHTTransportContact  contact )
    {     
    try{
         ByteArrayOutputStream  baos = new ByteArrayOutputStream();
         
         DataOutputStream  dos = new DataOutputStream(baos);
                
         contact.exportContact( dos );
         
         dos.close();
         
        return( baos.toByteArray());
  
    }catch( Throwable e ){

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    this.exact = exact;
  }


  public void open( CharSequence suffix ) throws FileNotFoundException {
    basenameSuffix = basename + suffix;
    zipDataOutputStream = new DataOutputStream( zipOut = new ZipOutputStream( new FileOutputStream( basenameSuffix + ZipDocumentCollection.ZIP_EXTENSION ) ) );
    numberOfDocuments = 0;
  }

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    }


    private void startMessage(int newMessageType) {
        this.messageType = newMessageType;
        outBuffer = new ByteArrayOutputStream();
        dataOut = new DataOutputStream(outBuffer);
    }

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    private void sendMessage() throws IOException {
        dataOut.flush();
        byte[] buff = outBuffer.toByteArray();
        int len = buff.length;
        dataOut = new DataOutputStream(out);
        dataOut.write(messageType);
        dataOut.writeInt(len + 4);
        dataOut.write(buff);
        dataOut.flush();
    }

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            releaseLock(fp, filelock, locks);
            postFileAppend(file, startPos, len);
        }
        if(ackRequired) {
            OutputStream out = socket.getOutputStream();
            DataOutputStream dos = new DataOutputStream(out);
            dos.writeLong(len);
            postAck(file, startPos, len);
        }


        if(LOG.isDebugEnabled()) {
            SocketAddress remoteAddr = socket.getRemoteSocketAddress();

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        DataInputStream din = null;
        if(sync) {
            InputStream in = socket.getInputStream();
            din = new DataInputStream(in);
        }
        final DataOutputStream dos = new DataOutputStream(out);
        final StopWatch sw = new StopWatch();
        FileInputStream src = null;
        final long nbytes;
        try {
            src = new FileInputStream(file);
            FileChannel fc = src.getChannel();


            String fileName = file.getName();
            IOUtils.writeString(fileName, dos);
            IOUtils.writeString(writeDirPath, dos);
            long xferBytes = (count == -1L) ? fc.size() : count;
            dos.writeLong(xferBytes);
            dos.writeBoolean(append); // append=false
            dos.writeBoolean(sync);
            if(handler == null) {
                dos.writeBoolean(false);
            } else {
                dos.writeBoolean(true);
                handler.writeAdditionalHeader(dos);
            }


            // send file using zero-copy send
            nbytes = fc.transferTo(fromPos, xferBytes, channel);

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        DataInputStream din = null;
        if(sync) {
            InputStream in = socket.getInputStream();
            din = new DataInputStream(in);
        }
        final DataOutputStream dos = new DataOutputStream(out);
        final StopWatch sw = new StopWatch();
        try {
            IOUtils.writeString(fileName, dos);
            IOUtils.writeString(writeDirPath, dos);
            long nbytes = data.size();
            dos.writeLong(nbytes);
            dos.writeBoolean(append);
            dos.writeBoolean(sync);
            if(handler == null) {
                dos.writeBoolean(false);
            } else {
                dos.writeBoolean(true);
                handler.writeAdditionalHeader(dos);
            }


            // send file using zero-copy send
            data.writeTo(out);

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      String[] children = file.getParentFile().list();
      if (children == null) return false;
      character.id = children.length + 1;
    }


    DataOutputStream output = null;
    try {
      output = new DataOutputStream(new FileOutputStream(file));
      output.writeInt(character.id);
      output.writeUTF(character.otherStuff);
      output.writeInt(character.x);
      output.writeInt(character.y);
      return true;
    } catch (IOException ex) {
      ex.printStackTrace();
      return false;
    } finally {
      try {
        output.close();
      } catch (IOException ignored) {
      }
    }
  }

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