vote.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
            DatabaseReference ref = FirebaseDatabase.getInstance().getReference().child("Vote")
                    .child(value);

            ref.addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    voteCount = dataSnapshot.child("value2").getValue(long.class);

                printData();

                        try {
                            finalize();
                        } catch (Throwable throwable) {
                            throwable.printStackTrace();
                        }
                    }