Java Utililty Methods File Rename

boolean result = false;
File file = new File(oldname);
if (file.exists()) {
    result = file.renameTo(new File(newone));
return result;

File file = new File(oldPath);
if (!file.exists()) {
    return;
String newPath = newName;
if (file.getParent() != null) {
    newPath = file.getParent() + File.separator + newName;
file.renameTo(new File(newPath));

try {
    File dest = null;
    if (!oldPath.equals(newPath)) {
        File file = new File(oldPath);
        dest = new File(newPath);
        file.renameTo(dest);
} catch (Exception e) {
...

boolean done = false;
File source = new File(oldPath);
File destination = new File(newPath);
try {
    if (destination.exists()) {
        if (!overwrite) {
            throw new IOException("'" + newPath + "' already exists");
        if (!destination.delete()) {
            throw new IOException("Could not delete '" + newPath + "'");
    if (!source.renameTo(destination)) {
        throw new IOException("'" + oldPath + "' could not be renamed to '" + newPath + "'");
    done = true;
} finally {
    if (done) {
        source.delete();

File orig = new File(origPath);
File dest = new File(destPath);
if (!orig.exists() || dest.exists())
    return false;
return orig.renameTo(dest);

synchronized (path.intern()) {
    File newFile = new File(newPath);
    if (newFile.exists()) {
        return false;
    File oldFile = new File(path);
    return oldFile.renameTo(newFile);