Example usage for java.nio.channels FileChannel transferTo

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:Main.java

public static void copyFile(File src, File dest) throws IOException {
    FileOutputStream fileOut = null;
    FileInputStream fileIn = null;
    try {/*from w w w  .ja v  a 2 s .  com*/
        fileOut = new FileOutputStream(dest);
        fileIn = new FileInputStream(src);
        FileChannel inChannel = fileIn.getChannel();
        FileChannel outChannel = fileOut.getChannel();
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (fileIn != null) {
            fileIn.close();
        }
        if (fileOut != null) {
            fileOut.close();
        }
    }
}

From source file:Main.java

public static void copyFile(File src, File dst) throws IOException {
    FileInputStream in = new FileInputStream(src);
    FileOutputStream out = new FileOutputStream(dst);
    FileChannel inChannel = in.getChannel();
    FileChannel outChannel = out.getChannel();

    try {/*from  ww  w .  j a  va2 s .com*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        outChannel.close();
    }

    in.close();
    out.close();
}

From source file:Main.java

public static ByteBuffer readBytes(String file) throws IOException {
    ByteArrayOutputStream dataOut = new ByteArrayOutputStream();
    FileChannel fChannel = new RandomAccessFile(file, "r").getChannel();
    fChannel.transferTo(0, fChannel.size(), Channels.newChannel(dataOut));
    fChannel.close();/*from  w  ww.  java2s  .co  m*/
    return ByteBuffer.wrap(dataOut.toByteArray());
}

From source file:Main.java

public static void copy(File src, File dst) throws IOException {
    FileInputStream inStream = new FileInputStream(src);
    FileOutputStream outStream = new FileOutputStream(dst);
    FileChannel inChannel = inStream.getChannel();
    FileChannel outChannel = outStream.getChannel();
    inChannel.transferTo(0, inChannel.size(), outChannel);
    inStream.close();//from  www .  j a va  2s  .c  om
    outStream.flush();
    outStream.close();
}

From source file:Main.java

public static void copyCompletely(InputStream input, OutputStream output) throws IOException {
    // if both are file streams, use channel IO
    if ((output instanceof FileOutputStream) && (input instanceof FileInputStream)) {
        try {//from www.jav  a 2  s  . co m
            FileChannel target = ((FileOutputStream) output).getChannel();
            FileChannel source = ((FileInputStream) input).getChannel();

            source.transferTo(0, Integer.MAX_VALUE, target);

            source.close();
            target.close();

            return;
        } catch (Exception e) { /* failover to byte stream version */
        }
    }

    byte[] buf = new byte[8192];
    while (true) {
        int length = input.read(buf);
        if (length < 0)
            break;
        output.write(buf, 0, length);
    }

    try {
        input.close();
    } catch (IOException ignore) {
    }
    try {
        output.close();
    } catch (IOException ignore) {
    }
}

From source file:Main.java

/**
 * Copies the contents of one file to the other using {@link FileChannel}s.
 * /*from  w ww. j  av  a2s . c  o  m*/
 * @param src
 *            source {@link File}
 * @param dst
 *            destination {@link File}
 */
public static void copyFile(File src, File dst) throws IOException {
    FileInputStream in = new FileInputStream(src);
    FileOutputStream out = new FileOutputStream(dst);
    FileChannel inChannel = in.getChannel();
    FileChannel outChannel = out.getChannel();

    try {
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }

    in.close();
    out.close();
}

From source file:org.geomajas.plugin.deskmanager.utility.FileUtils.java

/**
 * Zip all files in a directory, only relative filenames are used, does not recurse.
 * /*  w  ww .  j  a va2s  .  com*/
 * @param sourceFolder
 * @param targetFileName
 * @return
 * @throws IOException
 */
public static File zipDirectory(File sourceFolder, String targetFileName) throws IOException {
    File target = new File(sourceFolder, targetFileName + (targetFileName.endsWith(".zip") ? "" : ".zip"));
    if (target.isFile()) {
        throw new IOException("Bestand bestaat reeds! " + target.getAbsolutePath());
    }
    File[] files = sourceFolder.listFiles();

    ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(target));
    WritableByteChannel out = Channels.newChannel(zos);
    FileInputStream is = null;
    try {
        for (File file : files) {
            zos.putNextEntry(new ZipEntry(file.getName()));

            is = new FileInputStream(file);
            FileChannel in = is.getChannel();
            in.transferTo(0, in.size(), out);

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

    return target;
}

From source file:Main.java

private static void copyFile(File src, File dst) throws IOException {
    FileInputStream in = new FileInputStream(src);
    FileOutputStream out = new FileOutputStream(dst);
    FileChannel fromChannel = null, toChannel = null;
    try {//from w  ww. j  a v  a  2  s  .c om
        fromChannel = in.getChannel();
        toChannel = out.getChannel();
        fromChannel.transferTo(0, fromChannel.size(), toChannel);
    } finally {
        if (fromChannel != null)
            fromChannel.close();
        if (toChannel != null)
            toChannel.close();
    }
}

From source file:Main.java

public static void copyFdToFile(FileDescriptor src, File dst) throws IOException {
    FileChannel inChannel = new FileInputStream(src).getChannel();
    FileChannel outChannel = new FileOutputStream(dst).getChannel();
    try {//from www.  j a  v a2s.c om
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:Main.java

private static void copyFile(File src, File dst) throws Exception {
    FileChannel inChannel = (new FileInputStream(src)).getChannel();
    FileChannel outChannel = (new FileOutputStream(dst)).getChannel();
    try {/*w w w .  j a v  a 2s. c  om*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null)
            inChannel.close();
        if (outChannel != null)
            outChannel.close();
    }
}