Java Simple Renamer

import java.io.File;

public class Renamer {
    static String directory = "E:\\Müzikler\\Duman";
    public static void main(String[] args) {
        File dir = new File(directory);
        if(dir.exists() && dir.isDirectory()) {
            File[] files = dir.listFiles();
            for(int i=0; i<files.length; i++) {
                if(files[i].isFile()) {
                    System.out.println("From : " + files[i].toString());
                    String newPath = files[i].getParent() + File.separator + "Duman - " + files[i].getName();
                    System.out.println("To   : " + newPath);
                    files[i].renameTo(new File(newPath));
                }
            }
        }
    }
}