Alert Dialog code in android studio

 public AlertDialog.Builder builDialog(Context context){

    final AlertDialog.Builder builder = new AlertDialog.Builder(context);
    builder.setTitle("No Internet Connection");
    builder.setCancelable(false);
    builder.setMessage("Dear user you are not connected to Internet.");
    builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });
    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
          builder.setCancelable(true);
        }
    });
    return builder;
}