Example usage for java.nio.channels FileChannel size

Introduction

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

Prototype

public abstract long size() throws IOException;

Source Link

Document

Returns the current size of this channel's file.

Usage

From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        if (!destFile.createNewFile()) {
            throw new IOException("Cannot create file: " + destFile.getCanonicalFile());
        }//w w w .j ava  2 s . c o m
    }
    FileChannel source = null;
    FileChannel destination = null;
    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        long count = 0;
        long size = source.size();
        while ((count += destination.transferFrom(source, count, size - count)) < size)
            ;
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:Main.java

/**
 * Copy a file by using the file channels, it could be 10x faster than the traditional way of
 * copying file by using the file streams.
 * /*from  w  w w.j  a va  2s  . c o  m*/
 * @param src     the source file
 * @param dest    the destination file
 * @throws IOException
 */
public static void copyFileUsingFileChannels(File src, File dest) throws IOException {
    FileChannel inputChannel = null;
    FileChannel outputChannel = null;

    try {
        inputChannel = new FileInputStream(src).getChannel();
        outputChannel = new FileOutputStream(dest).getChannel();
        outputChannel.transferFrom(inputChannel, 0, inputChannel.size());
    } finally {
        inputChannel.close();
        outputChannel.close();
    }
}

From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {

    new File(destFile.getParent()).mkdirs();

    if (!destFile.exists()) {
        destFile.createNewFile();//  ww  w . ja  va 2  s. c o m
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.getParentFile().exists())
        destFile.getParentFile().mkdirs();

    if (!destFile.exists()) {
        destFile.createNewFile();// w  ww  . j a v  a2  s . c o m
    } else {
        destFile.delete();
        destFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:Main.java

/**
 * Copy a file./*from w  w w  .j  a va 2  s.  co m*/
 * 
 * @param sourceFile
 *            The source
 * @param destDir
 *            The destination directory
 * @throws IOException
 *             Everything fails sometimes
 */
protected static void CopyFileToDir(File sourceFile, File destDir) throws IOException {

    File destFile = new File(destDir, sourceFile.getName());

    if (!destFile.exists()) {
        destFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        destFile.createNewFile();/*ww w .  j a va  2  s  .  c om*/
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        closeQuietly(source);
        closeQuietly(destination);
    }
}

From source file:com.github.neoio.nio.util.NIOUtils.java

public static long fileSize(FileChannel channel) throws NetIOException {
    try {/*from ww w .j a  v  a 2s.  c o m*/
        return channel.size();
    } catch (IOException e) {
        throw new NetIOException("Error getting file size", e);
    }
}

From source file:Main.java

/**
 * Copy file using NOI//w w w .j ava2s  .co  m
 *
 * @param source
 * @param dest
 */
public static void copyFile(String source, String dest) throws IOException {
    File sourceFile = new File(source);
    File destFile = new File(dest);
    FileChannel inputChannel = null;
    FileChannel outputChannel = null;
    try {
        inputChannel = new FileInputStream(sourceFile).getChannel();
        outputChannel = new FileOutputStream(destFile).getChannel();
        outputChannel.transferFrom(inputChannel, 0, inputChannel.size());
    } finally {
        try {
            inputChannel.close();
            outputChannel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

From source file:com.cats.version.utils.Utils.java

public static void copyFile(File srcFile, File destFile) {
    FileInputStream fis = null;/*  www  .  jav  a 2  s  . co m*/
    FileOutputStream fos = null;
    try {
        fis = new FileInputStream(srcFile);
        fos = new FileOutputStream(destFile);
        FileChannel inChannel = fis.getChannel();
        FileChannel outChannel = fos.getChannel();
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        Utils.closeRes(fis);
        Utils.closeRes(fos);
    }
}

From source file:VASSAL.tools.io.IOUtils.java

/**
 * Copies bytes from a large (over 2GB) <code>FileInputStream</code> to a
 * <code>FileOutputStream</code>.
 *
 * This method uses channels. The input file should not be written
 * to during the copy.// www.  j  a  va2 s.co m
 *
 * @param in the source
 * @param out the destination
 * @throws IOException if one occurs while reading or writing
 */
public static long copyLarge(FileInputStream in, FileOutputStream out) throws IOException {
    final FileChannel inc = in.getChannel();
    return inc.transferTo(0L, inc.size(), out.getChannel());
}