RoomModule.java

@Module
@InstallIn(SingletonComponent.class)
public class RoomModule {

    @Provides
    @Singleton
    public static AppDatabase provideDB(Application application) {
        return Room.databaseBuilder(application, AppDatabase.class, AppDatabase.DATABASE_NAME)
                .fallbackToDestructiveMigration()
                .allowMainThreadQueries()
                .build();
    }

    @Provides
    @Singleton
    public static UserDataDAO provideUserDataDAO(AppDatabase appDatabase) {
        return appDatabase.userDataDAO();
    }
}