data is not saving in firebase database java android

Question

I am downloading and uploading the name and URL of audios from firebase storage. I downloaded the URL and name successfully but this is not uploading to the firebase database

data downloading and uploading

StorageReference reference = storage.getReference().child("Ringtone");
        reference.listAll().addOnSuccessListener(listResult -> {
            Log.d("Tag","reference listed");
            for(StorageReference item:listResult.getItems()){

                Task<Uri> downloadUrlTask = item.getDownloadUrl();
                Task<StorageMetadata> downloadNameTask = item.getMetadata();

                Tasks.whenAll(downloadNameTask,downloadUrlTask).addOnSuccessListener(unused -> {

                    Methods methods = new Methods();
                    methods.firebse_ring_upload(downloadNameTask.getResult().getName(),downloadUrlTask.getResult());
                });
            }
        });

Method class

package com.example.alarm.Methods;

import android.net.Uri;
import android.util.Log;

import com.example.alarm.Models.RingtoneModel;
import com.google.firebase.database.FirebaseDatabase;

public class Methods {

    FirebaseDatabase database = FirebaseDatabase.getInstance();

    public void firebse_ring_upload(String songName, Uri uri){
        RingtoneModel ringtoneModel = new RingtoneModel(songName,uri.toString());
        database.getReference().child("Ringtones_Room").child(songName.replace(" ","").replaceAll("[\\W+]","")).setValue(ringtoneModel);

    }

}

RingtoneModel (POJO class)

package com.example.alarm.Models;

import android.net.Uri;

public class RingtoneModel {
    String SongName;
    String uri;

    public RingtoneModel(String songName, String uri) {
        SongName = songName;
        this.uri = uri;
    }

    public RingtoneModel(){}

    public String getSongName() {
        return SongName;
    }

    public void setSongName(String songName) {
        SongName = songName;
    }

    public String getUri() {
        return uri;
    }

    public void setUri(Uri uri) {
        this.uri = uri.toString();
    }
}

previously this was showing StackOverflow error because I was trying to save URI in the database. but this should work now. This not showing me any type of error also.

if any other info required. comment down

Edit

I updated my method just like this: (in method class)

public void firebse_ring_upload(String songName, Uri uri){
        RingtoneModel ringtoneModel = new RingtoneModel(songName,uri.toString());
        database.getReference("https://alarm-sachinbudak-default-rtdb.asia-southeast1.firebasedatabase.app/").child("Ringtones_Room").child(songName.replaceAll("[\\W+]","")).setValue(ringtoneModel);

    }

but this is giving me a new error:

com.google.firebase.database.DatabaseException: Invalid Firebase Database path: https://alarm-sachinbudak-default-rtdb.asia-southeast1.firebasedatabase.app/. Firebase Database paths must not contain '.', '#', '$', '[', or ']'
            at com.google.firebase.database.core.utilities.Validation.validatePathString(Validation.java:45)
            at com.google.firebase.database.core.utilities.Validation.validateRootPathString(Validation.java:58)
            at com.google.firebase.database.FirebaseDatabase.getReference(FirebaseDatabase.java:181)
            at com.example.alarm.Methods.Methods.firebse_ring_upload(Methods.java:14)
            at com.example.alarm.MainActivity.lambda$onCreate$3(MainActivity.java:85)