Examples of java.nio.channels.FileChannel.transferFrom()

java.nio.channels.FileChannel.transferFrom()
Transfers bytes into this channel's file from the given readable byte channel. It may be very efficient. By invoking this methid, it will read form the source channel and write into the file channel. Note: no guarantee whether all bytes may be transferred. And it does not modify the position of the channel. @param src the source channel to read @param position the non-negative position to begin @param count the non-negative bytes to be transferred @return the number of bytes that are transferred. @throws IllegalArgumentException If the parameters are not correct @throws NonReadableChannelException If the source channel is not readable @throws NonWritableChannelException If this channel is not writable @throws ClosedChannelException If either channel has already been closed @throws AsynchronousCloseException If either channel is closed by other threads during this operation @throws ClosedByInterruptException If the thread is interrupted during this operation @throws IOException If any I/O error occurs


        long bytesRead = 0;
        try
        {
            while (bytesRead < pendingFile.getExpectedBytes()) {
                bytesRead += fc.transferFrom(socketChannel, bytesRead, FileStreamTask.CHUNK_SIZE);
                pendingFile.update(bytesRead);
            }
        }
        catch (IOException ex)
        {

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        // Create channel on the source & destination
        FileChannel srcChannel = new FileInputStream(src).getChannel();
        FileChannel dstChannel = new FileOutputStream(dst).getChannel();


        // Copy file contents from source to destination
        dstChannel.transferFrom(srcChannel, 0, srcChannel.size());


        // Close the channels
        srcChannel.close();
        dstChannel.close();
    }

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                    // copy
                    RandomAccessFile graf = new RandomAccessFile(gACL, "r");
                    FileChannel rfc = graf.getChannel();
                    RandomAccessFile oraf = new RandomAccessFile(lACL, "rw");
                    FileChannel wfc = oraf.getChannel();
                    wfc.transferFrom(rfc, 0, graf.length());
                    rfc.close();
                    wfc.close();
                    graf.close();
                    oraf.close();

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                    graf = new RandomAccessFile(gPW, "r");
                    rfc = graf.getChannel();
                    oraf = new RandomAccessFile(lPW, "rw");
                    wfc = oraf.getChannel();
                    wfc.transferFrom(rfc, 0, graf.length());
                    rfc.close();
                    wfc.close();
                    graf.close();
                    oraf.close();

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                    logger.info("Receiving file " + fileEntry.getFileName());


                    FileChannel fileChannel = new FileOutputStream(new File(destinationDirPath,
                                                                            fileEntry.getFileName())).getChannel();
                    ReadableByteChannel channelIn = Channels.newChannel(inputStream);
                    fileChannel.transferFrom(channelIn, 0, fileEntry.getFileSizeBytes());
                    fileChannel.force(true);
                    fileChannel.close();


                    logger.info("Completed file " + fileEntry.getFileName());
                }

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        FileChannel destination = null;


        try {
            source = new FileInputStream(sourceFile).getChannel();
            destination = new FileOutputStream(destFile).getChannel();
            destination.transferFrom(source, 0, source.size());
        } catch (IOException ioe) {
            throw new RuntimeException("Unable to copy " + sourceFile.getAbsolutePath() + " to " + destFile.getAbsolutePath(), ioe);
        } finally {
            if(source != null) {
                try {

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        targetFile.getParentFile().mkdirs();
        targetFile.createNewFile(); // if necessary, creates the target file


        final FileChannel srcChannel = new FileInputStream(srcFile).getChannel();
        final FileChannel dstChannel = new FileOutputStream(targetFile).getChannel();
        dstChannel.transferFrom(srcChannel, 0, srcChannel.size());


        srcChannel.close();
        dstChannel.close();
    }

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        FileChannel destination = null;


        try {
            source = new FileInputStream(sourceFile).getChannel();
            destination = new FileOutputStream(destFile).getChannel();
            destination.transferFrom(source, 0, source.size());
        } catch (IOException ioe) {
            throw new RuntimeException("Unable to copy " + sourceFile.getAbsolutePath() + " to " + destFile.getAbsolutePath(), ioe);
        } finally {
            if(source != null) {
                try {

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  ReadableByteChannel bc = Channels.newChannel(FromUrl.openStream());
  FileChannel fc = (new FileOutputStream(ToFile)).getChannel();
  int pos = 0;// ������� � �����
  int transferunit = 1024;// ����� ������������ �� 1024 ����
  int len;// ������� ������������ �� ����� ����
  while ((len = (int) fc.transferFrom(bc, (long) pos, (long) transferunit)) == transferunit) {
      pos += len;
  }
  bc.close();
  fc.close();
    }

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        FileChannel destination = null;


        try {
            source = new FileInputStream(sourceFile).getChannel();
            destination = new FileOutputStream(destFile).getChannel();
            destination.transferFrom(source, 0, source.size());
        } catch (IOException ioe) {
            throw new RuntimeException("Unable to copy " + sourceFile.getAbsolutePath() + " to " + destFile.getAbsolutePath(), ioe);
        } finally {
            if(source != null) {
                try {

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