Files.move() in Java giving a FilesSystemException error because folder is "being used by another process," but it's not

Question

I want to move a single file to another folder, but I can't because "it is being used by another process." This is my code:

static File myFile = new File("C:\\filepath");
static File myFolder = new File("C:\\folderpath");

public static void main(String[] args) 
        throws IOException {
    fileMove();
}

public static void fileMove() 
        throws IOException {
    Files.move(myFile.toPath(), myFolder.toPath(), StandardCopyOption.REPLACE_EXISTING);
    return;
}

Error message:
Exception in thread "main" java.nio.file.FileSystemException: C:\folderpath: The process cannot access the file because it is being used by another process.

I've tried out different files, different folders, but everytime it says the file is being used. I've tested it with a basic text file that was definitely closed and not being used when I tested it, but I still get the error. Does anyone know what's going on? Or, is there another way to move files that won't have this issue?

Answer 1

Answer from user rollback:

Files.move(myFile.toPath(), myFolder.toPath().resolve(myFile.getName()), StandardCopyOption.REPLACE_EXISTING);