Java Utililty Methods FileChannel Copy

File s = new File(source);
File d = new File(destination);
FileInputStream ss = new FileInputStream(s);
FileOutputStream ds = new FileOutputStream(d);
FileChannel sourceFileChannel = ss.getChannel();
FileChannel destinationFileChannel = ds.getChannel();
long size = sourceFileChannel.size();
sourceFileChannel.transferTo(0, size, destinationFileChannel);
...

File sourceFile = new File(source);
File destinationFile = new File(destination);
copy(sourceFile, destinationFile, recursive);

FileChannel sourceChannel = new FileInputStream(sourceFile).getChannel();
FileChannel targetChannel = new FileOutputStream(targetFile).getChannel();
targetChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
sourceChannel.close();
targetChannel.close();

long size = 0;
InputStream in = null;
OutputStream out = null;
try {
    in = new BufferedInputStream(new FileInputStream(src));
    out = new BufferedOutputStream(new FileOutputStream(dest));
    size = copy(in, out);
} finally {
...

try {
    mylogger.log(Level.INFO, "Copy12:[0}] -> [{1}]{ ...",
            new Object[] { file1.getAbsolutePath(), file2.getAbsolutePath() });
    FileChannel in = (new FileInputStream(file1)).getChannel();
    FileChannel out = (new FileOutputStream(file2)).getChannel();
    in.transferTo(0, file1.length(), out);
    in.close();
    out.close();
...

FileInputStream in = new FileInputStream(sourceFileName);
FileOutputStream out = new FileOutputStream(destFileName);
FileChannel inC = in.getChannel();
FileChannel outC = out.getChannel();
while (inC.position() < inC.size()) {
    inC.transferTo(inC.position(), MB, outC);
    inC.position(inC.position() + MB);
inC.close();
outC.close();
in.close();
out.close();

FileInputStream sourceInputStream = null;
FileInputStream targetInputStream = null;
try {
    sourceInputStream = new FileInputStream(source);
    targetInputStream = new FileInputStream(target);
    FileChannel sourceChannel = sourceInputStream.getChannel();
    FileChannel targetChannel = targetInputStream.getChannel();
    sourceChannel.transferTo(0, sourceChannel.size(), targetChannel);
...

if (!targetDir.isDirectory()) {
    throw new RuntimeException("Cannot copy files to a file that is not a directory.");
File target = new File(targetDir, source.getName());
if (source.isDirectory()) {
    if (!target.mkdir()) {
        throw new RuntimeException("Cannot create directory " + target.getAbsolutePath());
    for (File f : source.listFiles()) {
        copyAll(f, target);
} else {
    copyFile(source, target);

if (to.exists()) {
    to.delete();
to.createNewFile();
FileChannel inChannel = new FileInputStream(from).getChannel();
FileChannel outChannel = new FileOutputStream(to).getChannel();
try {
    inChannel.transferTo(0, inChannel.size(), outChannel);
...

if (length < 0L || length >= Integer.MAX_VALUE)
    return out.transferFrom(in, 0L, length);
long result = 0L;
while (result < length)
    result += out.transferFrom(in, result, length - result);
return result;