Java Utililty Methods File Copy nio

try {
    copyFile(sourceFile, destFile);
    return true;
} catch (IOException ioe) {
    System.out.println("File copy failed: " + ioe);
    return false;

FileChannel sourceChannel = null;
FileChannel destinationChannel = null;
try {
    sourceChannel = new FileInputStream(sourceFile).getChannel();
    destinationChannel = new FileOutputStream(destinationFile).getChannel();
    destinationChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
} finally {
    if (sourceChannel != null) {
...

FileChannel sourceChannel = null;
FileChannel targetChannel = null;
try {
    sourceChannel = new FileInputStream(sourceFile).getChannel();
    targetChannel = new FileOutputStream(targetFile).getChannel();
    targetChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
} finally {
    if (sourceChannel != null)
...

if (!src.exists())
    return;
if (!dest.exists())
    dest.mkdir();
for (File f : src.listFiles()) {
    File target = new File(dest, f.getName());
    if (f.isDirectory())
        copy(f, target);
...

if (src.isDirectory()) {
    if (!dest.exists()) {
        dest.mkdir();
    String files[] = src.list();
    for (String file : files) {
        File srcFile = new File(src, file);
        File destFile = new File(dest, file);
...

FileInputStream in = null;
FileOutputStream out = null;
try {
    in = new FileInputStream(src);
    out = new FileOutputStream(dest);
    copyInternal(in, out);
} finally {
    if (in != null) {
...

boolean result = true;
String files[] = null;
if (src.isDirectory()) {
    files = src.list();
    result = dest.mkdir();
} else {
    files = new String[1];
    files[0] = "";
...

FileInputStream fis = null;
FileChannel in = null;
FileOutputStream fos = null;
FileChannel out = null;
try {
    fis = new FileInputStream(src);
    in = fis.getChannel();
    fos = new FileOutputStream(dist);
...

copy(src, dst, false);

FileChannel source = null;
FileChannel destination = null;
try {
    source = new FileInputStream(src).getChannel();
    destination = new FileOutputStream(dst).getChannel();
    destination.transferFrom(source, 0, source.size());
} finally {
    if (source != null) {
...