Java Utililty Methods FileChannel Copy

List of utility methods to do FileChannel Copy

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Description

The list of methods to do FileChannel Copy are organized into topic(s).

Method

voidcopyFile(File source, File destination, boolean overwrite)
Copies a file. 
FileChannel inputChannel = null;
FileChannel outputChannel = null;
if (destination.exists()) {
    if (overwrite) {
        if (!destination.delete()) {
            throw new IOException("Unable to delete the destination file.");
    } else {
...
booleancopyFile(File source, File destination, long chunkSize, boolean overwrite)
copy File 
if (destination.exists() && !overwrite) {
    return false;
} else if (destination.exists() && !destination.canWrite()) {
    return false;
} else {
    FileChannel sourceChannel = null;
    FileChannel destinationChannel = null;
    FileInputStream fis = null;
...
voidcopyFile(File source, File target)
A raw file copy function -- this is not public since no error checks are made as to the consistency of the file being copied. 
FileChannel sourceChannel = new FileInputStream(source).getChannel();
FileChannel targetChannel = new FileOutputStream(target).getChannel();
long pos = 0;
long toCopy = sourceChannel.size();
while (toCopy > 0) {
    long bytes = sourceChannel.transferTo(pos, toCopy, targetChannel);
    pos += bytes;
    toCopy -= bytes;
...
voidcopyFile(File source, File target)
copy File 
FileChannel inChannel = null;
FileChannel outChannel = null;
try {
    inChannel = new FileInputStream(source).getChannel();
    outChannel = new FileOutputStream(target).getChannel();
    long fileSize = inChannel.size();
    long position = 0;
    while (position < fileSize) {
...
voidcopyFile(File source, File target)
copy File 
File file = null;
if (source.isDirectory() && source.exists() && target.isDirectory() && target.exists()) {
    File[] children = source.listFiles();
    for (File child : children) {
        file = target;
        if (child.isDirectory()) {
            file = new File(target, child.getName());
            if (!file.exists())
...
voidcopyFile(File source, File target)
copy File 
InputStream is = null;
try {
    is = new FileInputStream(source);
} catch (FileNotFoundException e) {
    e.printStackTrace();
copyFile((FileInputStream) is, target);
voidcopyFile(File source, File target)
Inspired by http://stackoverflow.com/questions/106770/standard-concise-way-to-copy-a-file-in-java/115086#115086 
if (!target.exists()) {
    target.createNewFile();
FileChannel sourceChannel = null;
FileChannel targetChannel = null;
try {
    sourceChannel = new FileInputStream(source).getChannel();
    targetChannel = new FileOutputStream(target).getChannel();
...
voidcopyFile(File sourceFile, File destFile)
copy File 
FileInputStream in = null;
FileOutputStream out = null;
FileChannel source = null;
FileChannel destination = null;
try {
    destFile.createNewFile();
    in = new FileInputStream(sourceFile);
    out = new FileOutputStream(destFile);
...
voidcopyFile(File sourceFile, File destFile)
copy File 
destFile.getParentFile().mkdirs();
if (!destFile.exists()) {
    try {
        destFile.createNewFile();
    } catch (IOException ioe) {
        throw new RuntimeException("Unable to create file " + destFile.getAbsolutePath(), ioe);
FileChannel source = null;
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 {
            source.close();
        } catch (IOException e) {
    if (destination != null) {
        try {
            destination.close();
        } catch (IOException e) {
voidcopyFile(File sourceFile, File destFile)
copy File 
try {
    if (!destFile.exists()) {
        destFile.createNewFile();
    FileChannel source = null;
    FileChannel destination = null;
    try {
        source = new FileInputStream(sourceFile).getChannel();
...