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);
            }
            StreamingService.instance.setStatus("Receiving stream: finished reading chunk, awaiting more");
        }
        catch (IOException ex)

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                targetFile.createNewFile();
            }


            sourceChannel = new FileInputStream(sourceFile).getChannel();
            targetChannel = new FileOutputStream(targetFile).getChannel();
            targetChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
        } catch (Exception e) {
            throw new CedarRuntimeException("Failed to copy file: " + e.getMessage(), e);
        } finally {
            close(sourceChannel);
            close(targetChannel);

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    {
        FileChannel c1 = new RandomAccessFile( src, "r" ).getChannel();
        FileChannel c2 = new RandomAccessFile( dst, "rw" ).getChannel();


        long tCount = 0, size = c1.size();
        while ( ( tCount += c2.transferFrom( c1, 0, size - tCount ) ) < size )
            ;


        c1.close();
        c2.force( true );
        c2.close();

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            sourceChannel = sourceStream.getChannel();


            destinationStream = new FileOutputStream(newFile);
            destinationChannel = destinationStream.getChannel();


            destinationChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
            sourceStream.close();
            destinationStream.close();
            File directory = historyFile.getParentFile();
            boolean deleted = historyFile.delete();
            if (!deleted) {

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    private static void copyFile(File source, File dest) throws IOException {
        FileChannel srcChannel = new FileInputStream(source).getChannel();
        // Create channel on the destination
        FileChannel dstChannel = new FileOutputStream(dest).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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        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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        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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            outFile = new File(toDirectory, file.getName());
            fos = new FileOutputStream(outFile);
            FileChannel outCh = fos.getChannel();


            outCh.transferFrom(inCh, 0, inCh.size());


            return outFile;
        } catch (IOException ioe) {
            LOG.error(ioe);
            throw ioe;

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                  ReadableByteChannel bch = Channels.newChannel(new ByteArrayInputStream(this.data));


                  if ((newIndex = (int)position) > 0)
                  {
                     // begin from the existed bytes
                     chch.transferFrom(bch, 0, newIndex < data.length ? newIndex : data.length);
                     bch.close();
                  }


                  // write update data
                  ReadableByteChannel sch = Channels.newChannel(stream);

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                     bch.close();
                  }


                  // write update data
                  ReadableByteChannel sch = Channels.newChannel(stream);
                  chch.transferFrom(sch, newIndex, length);
                  sch.close();
                  newIndex += length;


                  if (newIndex < data.length)
                     // write the rest of existed data

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