Script Ubah File Path

String getNPath(String fullPath) {
    String AL = "";
    int index = fullPath.lastIndexOf("\\");
    String fileName = fullPath;
    if (index >= 3) {
        fileName = fullPath.substring(index + 1);
        AL = fullPath.replaceAll(fileName, "") + "ENCRC6" + fileName;
    } else {
        index = fullPath.lastIndexOf("/");
        if (index > 3) {
            fileName = fullPath.substring(index + 1);
            AL = fullPath.replaceAll(fileName, "") + "ENCRC6" + fileName;
        } else {
            int dot = fullPath.lastIndexOf(".");
            String ext = fullPath.substring(dot + 1);
            AL = fullPath + "ENCRC6." + ext;
        }
    }
    return AL;
}

private boolean rename(File from, File to) {
    return from.getParentFile().exists() && from.exists() && from.renameTo(to);
}

File currentFile = new File(NF);
File newFile = new File(NF2);

if (rename(currentFile, newFile)) {
    //Success
    cetak("Baca Rename", "Success Rename "+NF+" TO "+NF2);
    cetak("Baca Hasil","File Berhasil di dekripsi ! lihat di : " + NF2);
    sukses("Dekrip Sukses !","Cek Di:"+NF2);
} else {
    //Fail
    cetak("Baca Rename", "Fail Rename "+NF+" TO "+NF2);
    cetak("Baca Hasil","File Berhasil di dekripsi ! lihat di : " + NF);
    sukses("Dekrip Gagal !","Cek Di:"+NF);
}