public static void main(String args[]) {

                File origen = new File("C:\Users\Montse\Documents\NetBeansProjects\Copiar2\hola.txt");
                File destino = new File("C:\Users\Montse\Documents\NetBeansProjects\Copiar2\backupVisibles\hola.txt");

                try {
                        InputStream in = new FileInputStream(origen);
                        OutputStream out = new FileOutputStream(destino);

                        byte[] buf = new byte[1024];
                        int len;

                        while ((len = in.read(buf)) > 0) {
                                out.write(buf, 0, len);
                        }

                        in.close();
                        out.close();
                } catch (IOException ioe){
                        ioe.printStackTrace();
                }


        }