Setting custom key when pushing new data to firebase database

Question

Well, I am new to Firebase and I want to have my own keys while pushing new data to database.

Problem:

FireBase.push().setValue(mapped_values);
         


        

Answer 1

        String key="1234567sdfsf8";
        //custom object
        User user=new User();
        DatabaseReference mDatabase;
        mDatabase = FirebaseDatabase.getInstance().getReference();
        mDatabase.child("Users").child(key).setValue(user);