Example usage for java.nio.channels FileChannel transferFrom

Introduction

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

Prototype

public abstract long transferFrom(ReadableByteChannel src, long position, long count) throws IOException;

Source Link

Document

Transfers bytes into this channel's file from the given readable byte channel.

Usage

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.
 * // w  ww  .  j  av a2s.c om
 * @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();
    }
}

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From source file:com.bellman.bible.service.common.FileManager.java

public static boolean copyFile(File fromFile, File toFile) {
    boolean ok = false;
    try {// w  w w . j a  v a  2 s .  com
        // don't worry if tofile exists, allow overwrite
        if (fromFile.exists()) {
            //ensure the target dir exists or FileNotFoundException is thrown creating dst FileChannel
            File toDir = toFile.getParentFile();
            toDir.mkdir();

            long fromFileSize = fromFile.length();
            log.debug("Source file length:" + fromFileSize);
            if (fromFileSize > CommonUtils.getFreeSpace(toDir.getPath())) {
                // not enough room on SDcard
                ok = false;
            } else {
                // move the file
                FileInputStream srcStream = new FileInputStream(fromFile);
                FileChannel src = srcStream.getChannel();
                FileOutputStream dstStream = new FileOutputStream(toFile);
                FileChannel dst = dstStream.getChannel();
                try {
                    dst.transferFrom(src, 0, src.size());
                    ok = true;
                } finally {
                    src.close();
                    dst.close();
                    srcStream.close();
                    dstStream.close();
                }
            }
        } else {
            // fromfile does not exist
            ok = false;
        }
    } catch (Exception e) {
        log.error("Error moving file to sd card", e);
    }
    return ok;
}

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From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        destFile.createNewFile();// w  ww . j  a  v  a2 s  .co m
    }

    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();
        }
    }
}

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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. j  a 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();
        }
    }
}

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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. ja  v  a  2s  .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();
        }
    }
}

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From source file:Main.java

/**
 * Copy file using NOI//w w  w .ja  v a 2  s.  c o  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();
        }
    }
}

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From source file:Main.java

/**
 * Copy a file./*from  ww w  . java 2s.  c o 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();
        }
    }
}

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From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        destFile.createNewFile();/*from   w w w .  j  a  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());
    } finally {
        closeQuietly(source);
        closeQuietly(destination);
    }
}

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From source file:org.eclipse.thym.hybrid.test.TestUtils.java

public static File createTempFile(String fileName) throws IOException, FileNotFoundException {
    File f = new File(getTempDirectory(), fileName);
    f.createNewFile();//from   w  w  w. ja  va2s  .  c  o m
    f.deleteOnExit();
    FileOutputStream fout = null;
    FileChannel out = null;
    InputStream in = TestUtils.class.getResourceAsStream("/" + fileName);
    try {
        fout = new FileOutputStream(f);
        out = fout.getChannel();

        out.transferFrom(Channels.newChannel(in), 0, Integer.MAX_VALUE);
        return f;
    } finally {
        if (out != null)
            out.close();
        if (in != null)
            in.close();
        if (fout != null)
            fout.close();
    }
}

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From source file:org.wso2.carbon.esb.vfs.transport.test.ESBJAVA4679VFSPasswordSecurityTestCase.java

/**
 * Copy the given source file to the given destination
 *
 * @param sourceFile source file// www. j a  va 2  s . co  m
 * @param destFile   destination file
 * @throws java.io.IOException
 */
public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        destFile.createNewFile();
    }
    FileInputStream fileInputStream = null;
    FileOutputStream fileOutputStream = null;
    try {
        fileInputStream = new FileInputStream(sourceFile);
        fileOutputStream = new FileOutputStream(destFile);

        FileChannel source = fileInputStream.getChannel();
        FileChannel destination = fileOutputStream.getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        IOUtils.closeQuietly(fileInputStream);
        IOUtils.closeQuietly(fileOutputStream);
    }
}

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