How to update a specific node from a Firebase data

Question

This question already has answers here:

How to move Firebase child from one node to another in Android? (4 answers)

Closed 3 years ago.

I have a relative simple Firebase database which looks like this:

How can i update the Room1 node? If i use this code, in stead of updating that node, it adds another one, with the new name, Room2.

databaseReference = FirebaseDatabase.getInstance().getReference().child("Rooms");
Query updateQuery = databaseReference.child(Room1).orderByKey().equalTo(Room1);
updateQuery.addListenerForSingleValueEvent(new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        dataSnapshot.getRef().getParent().child("Room2").setValue("");
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {}
    });

Thanks in advance!

Answer 1

databaseReference = FirebaseDatabase.getInstance().getReference().child("Rooms").child(Room1);
databaseReference.setValue()

with whatever new value you want in the setValue() parentheses