I'm trying to Rename a File using Java But It is Not Working for Some Reason

Question

File oldfile = new File("C:\\NewText Document.txt");
File newfile = new File("C:\\Hello Buddy.txt");

if (oldfile.renameTo(newfile))
{
   System.out.println("Rename succesful");
}
else
{
   System.out.println("Rename failed");
}

I'm planning on developing it into a file normalizer, but I just want to get this done first. I've tried using the absolute path, makes no difference. Constantly returning "Rename Failed".

Answer 1

FileChooser(); File oldfile = new File(fileName);

    File newfile = new File(fileName.substring(0, 21) + "hello world.txt");
    if (!oldfile.exists())
    {
        try
        {
            oldfile.createNewFile();
        }
        catch (IOException ex)
        {
            System.out.println(ex);
        }
    }
    else
    {

        if (oldfile.renameTo(newfile))
        {

            System.out.println("Rename succesful");
        }
        else
        {
            System.out.println("Rename failed");
        }
    }

This is my new code, it works using a file chooser,but currently it only works if i choose the file from my desktop, hence the hardcoded substring.

Answer 2

Use move method of Files class. Worked for me ;)

Java doc

Answer 3

If you are using Java 7 then try this:

    final File oldfile = new File("C:\\NewText Document.txt");
    final File newfile = new File("C:\\Hello Buddy.txt");

    final Path source = oldfile.toPath();
    final Path dest=newfile.toPath();

    try {
         Files.move(source, dest);
    } catch (IOException e) {
         e.printStackTrace();
    }