Example usage for java.nio.channels FileChannel transferTo

List of usage examples for java.nio.channels FileChannel transferTo

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Introduction

In this page you can find the example usage for java.nio.channels FileChannel transferTo.

Prototype

public abstract long transferTo(long position, long count, WritableByteChannel target) throws IOException;

Source Link

Document

Transfers bytes from this channel's file to the given writable byte channel.

Usage

From source file:com.becapps.easydownloader.utils.Utils.java

@SuppressWarnings("resource")
public static void copyFile(File src, File dst) throws IOException {
    FileChannel inChannel = new FileInputStream(src).getChannel();
    FileChannel outChannel = new FileOutputStream(dst).getChannel();
    //if (!dst.exists()) {
    try {//from  www  . j av a2s.  co  m
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null)
            inChannel.close();
        if (outChannel != null)
            outChannel.close();
    }
    /*} else {
       logger("w", "copyFile: destination already exists", DEBUG_TAG);
    }*/
}

From source file:com.edgenius.core.util.FileUtil.java

public static void copyFile(File in, File out) throws Exception {
    FileChannel sourceChannel = new FileInputStream(in).getChannel();
    FileChannel destinationChannel = new FileOutputStream(out).getChannel();
    sourceChannel.transferTo(0, sourceChannel.size(), destinationChannel);
    sourceChannel.close();/*  w  w w.ja v a2s. c  o m*/
    destinationChannel.close();
}

From source file:org.infai.amor.test.ModelUtil.java

public static void copyFile(final File in, final File out) throws IOException {
    final FileChannel inChannel = new FileInputStream(in).getChannel();
    final FileChannel outChannel = new FileOutputStream(out).getChannel();
    try {/*from  w w w. j  ava 2  s  . c o m*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } catch (final IOException e) {
        throw e;
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:org.pmedv.core.util.FileUtils.java

/**
 * Copies a file//  w w  w . ja  v a 2  s  .  com
 * 
 * @param in Source file
 * @param out Destination file
 * @throws IOException
 */
public static void copyFile(File in, File out) throws IOException {

    int bufsize = 8192;
    int transferred = 0;

    FileChannel inChannel = new FileInputStream(in).getChannel();
    FileChannel outChannel = new FileOutputStream(out).getChannel();

    try {
        while (transferred < inChannel.size()) {
            inChannel.transferTo(transferred, bufsize, outChannel);
            transferred += bufsize;
        }

    } catch (IOException e) {
        throw e;
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:org.pmedv.core.util.FileUtils.java

/**
 * Copies a file from in to out using a progress monitor
 * //  www  .  ja  v a 2 s .c  o  m
 * @param in the file to read from
 * @param out the file to write to
 * @param monitor the monitor interface to use
 * @throws IOException
 */
public static void copyFile(File in, File out, IProgressMonitor monitor) throws IOException {

    int bufsize = 8192;
    int transferred = 0;

    FileChannel inChannel = new FileInputStream(in).getChannel();
    FileChannel outChannel = new FileOutputStream(out).getChannel();

    try {
        while (transferred < inChannel.size()) {
            inChannel.transferTo(transferred, bufsize, outChannel);
            transferred += bufsize;
            int progress = (int) (transferred / (inChannel.size() / 100));
            monitor.setProgress(progress);
        }

    } catch (IOException e) {
        throw e;
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:Main.java

/**
 * Effective way to copy files by file channel.
 * @return Return the number of copied files.
 *//*  w w w. j  a va  2s  .  com*/
public static int fileChannelCopy(File[] sources, File[] targets) {
    int result = 0;
    if (sources == null || targets == null) {
        return result;
    }

    FileInputStream fis = null;
    FileOutputStream fos = null;
    FileChannel fc_in = null;
    FileChannel fc_out = null;
    try {
        for (int i = 0, len_s = sources.length, len_t = targets.length; i < len_s && i < len_t; ++i) {
            if (sources[i] == null || targets[i] == null) {
                continue;
            }

            fis = new FileInputStream(sources[i]);
            fos = new FileOutputStream(targets[i]);
            fc_in = fis.getChannel();
            fc_out = fos.getChannel();
            fc_in.transferTo(0, fc_in.size(), fc_out);

            ++result;
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (fc_out != null) {
            try {
                fc_out.close();
            } catch (IOException e) {
            }
        }
        if (fos != null) {
            try {
                fos.close();
            } catch (IOException e) {
            }
        }
        if (fc_in != null) {
            try {
                fc_in.close();
            } catch (IOException e) {
            }
        }
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException e) {
            }
        }
    }

    return result;
}

From source file:com.weihuoya.bboo._G.java

public static boolean copyFile(File src, File dst) {
    FileInputStream instream = null;
    FileOutputStream outstream = null;
    FileChannel inchannel = null;
    FileChannel outchannel = null;

    try {//  www  .ja  v a2 s . c om
        // channel
        instream = new FileInputStream(src);
        outstream = new FileOutputStream(dst);
        inchannel = instream.getChannel();
        outchannel = outstream.getChannel();
        // transfer
        inchannel.transferTo(0, inchannel.size(), outchannel);
        // close
        inchannel.close();
        outchannel.close();
        instream.close();
        outstream.close();
        //
        return true;
    } catch (IOException e) {
        _G.log(e.toString());
    }
    return false;
}

From source file:it.isislab.dmason.util.SystemManagement.Worker.Updater.java

public static void copyFile(File sfile, File dfile) throws Exception {
    FileChannel source = new FileInputStream(sfile).getChannel();
    FileChannel dest = new FileOutputStream(dfile).getChannel();
    source.transferTo(0, source.size(), dest);
    source.close();//from   w  w w  . j  av a2  s  . c om
    dest.close();

}

From source file:com.alibaba.otter.shared.common.utils.NioUtils.java

/**
 * ??copy/*  w  w  w .  j a v  a 2  s .c o  m*/
 */
public static long copy(InputStream input, OutputStream output) throws IOException {
    long count = 0;
    long n = 0;
    if (input instanceof FileInputStream) {
        FileChannel inChannel = ((FileInputStream) input).getChannel();
        WritableByteChannel outChannel = Channels.newChannel(output);
        count = inChannel.transferTo(0, inChannel.size(), outChannel);
    } else if (output instanceof FileOutputStream) {
        FileChannel outChannel = ((FileOutputStream) output).getChannel();
        ReadableByteChannel inChannel = Channels.newChannel(input);
        do {
            n = outChannel.transferFrom(inChannel, count, DEFAULT_BUFFER_SIZE);
            count += n;
        } while (n > 0);
    } else {
        byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];

        while (-1 != (n = input.read(buffer))) {
            output.write(buffer, 0, (int) n);
            count += n;
        }
        // ReadableByteChannel inChannel = Channels.newChannel(input);
        // WritableByteChannel outChannel = Channels.newChannel(output);
        //            
        // //ByteBuffer buffer = new ByteBuffer(DEFAULT_BUFFER_SIZE);
        // ByteBuffer buffer = ByteBuffer.allocateDirect(DEFAULT_BUFFER_SIZE);
        // while (-1 != (n = inChannel.read(buffer))) {
        // outChannel.write(buffer);
        // count += n;
        // }
    }
    return count;
}

From source file:com.alibaba.otter.shared.common.utils.NioUtils.java

/**
 * ??copy//from   w  ww . j  ava 2 s  .  c o m
 */
public static long copy(InputStream input, OutputStream output, long offset) throws IOException {
    long count = 0;
    long n = 0;
    if (input instanceof FileInputStream) {
        FileChannel inChannel = ((FileInputStream) input).getChannel();
        WritableByteChannel outChannel = Channels.newChannel(output);
        count = inChannel.transferTo(offset, inChannel.size() - offset, outChannel);
    } else if (output instanceof FileOutputStream) {
        FileChannel outChannel = ((FileOutputStream) output).getChannel();
        ReadableByteChannel inChannel = Channels.newChannel(input);
        do {
            n = outChannel.transferFrom(inChannel, offset + count, DEFAULT_BUFFER_SIZE);
            count += n;
        } while (n > 0);
    } else {
        byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];

        input.skip(offset);
        while (-1 != (n = input.read(buffer))) {
            output.write(buffer, 0, (int) n);
            count += n;
        }
        // ReadableByteChannel inChannel = Channels.newChannel(input);
        // WritableByteChannel outChannel = Channels.newChannel(output);
        //            
        // //ByteBuffer buffer = new ByteBuffer(DEFAULT_BUFFER_SIZE);
        // ByteBuffer buffer = ByteBuffer.allocateDirect(DEFAULT_BUFFER_SIZE);
        // while (-1 != (n = inChannel.read(buffer))) {
        // outChannel.write(buffer);
        // count += n;
        // }
    }
    return count;
}