I have a question for Android Room. (I uploaded a new source code) Second!)

public Translate(TotalPresent.GetData present) {
    this.present = present;
    languageData = new LanguageData();
}

@Override
public void translatedata(String change, String text){
    retrofit = new Retrofit.Builder()
            .baseUrl(PapagoService.URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    PapagoService papagoService = retrofit.create(PapagoService.class);

    HashMap<String,Object> param = new HashMap<>();
    param.put("source","ko");
    param.put("target",change);
    param.put("text",text);

    papagoService.getResult(param).enqueue(new Callback<Result>() {
        @Override
        public void onResponse(Call<Result> call, Response<Result> response) {
            if(response.isSuccessful()){
                Result result = response.body();
                Message message = result.getMessage();
                DetailData detailData = message.getDetailData();
                present.getData(detailData.getTranslatedText()); // Communicate to show the result of response to UI
                languageData.postData(text,detailData.getTranslatedText()); // Communicate and hand over data to save as DB data
            }
        }

        @Override
        public void onFailure(Call<Result> call, Throwable t) {

        }
    });
}

public void setModel(RecyclerView recyclerView, RecyclerViewAdpater recyclerViewAdpater){
    model = ViewModelProviders.of(recyclerView).get(Model.class);
    model.getAllLanguage().observe(recyclerView, languages -> recyclerViewAdpater.setData(languages));
}

public void postData(String text,String text2){
    This.text = text; // This part
    This.text2 = text2; //This part 
}


public void setLanguage() {
    try {
        Language language = new Language();
        language.setLanguage(text); // Gets the taken over data
        language.setLanguage2(text2);// Gets the passed data
        model.insert(language);
    }catch (Exception e){
        e.printStackTrace();
    }
}

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    binding = DataBindingUtil.inflate(inflater,R.layout.recycler_view,container,false);
    languageData = new LanguageData();
    recyclerViewAdpater = new RecyclerViewAdpater(getContext());

    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext(),LinearLayoutManager.VERTICAL,false);
    binding.recyclerview.setLayoutManager(linearLayoutManager);
    binding.recyclerview.setAdapter(recyclerViewAdpater);

    languageData.setModel(this, recyclerViewAdpater);
    languageData.setLanguage(); // Invoke the method you received the data from here
    //There is an error in this part.
    return binding.getRoot();
}

public void insert(Language language) {

    new AsyncTask<Language, Void, Long>(){
        @Override
        protected void onPostExecute(Long aLong) {
            super.onPostExecute(aLong);
            Log.d(TAG, "insert : " + aLong);

        }

        @Override
        protected Long doInBackground(Language... languages) {
            if(languageDao == null)
                return -1L;
            return languageDao.insert(languages[0]);
        }
    }.execute(language);
}

@Dao
public interface LanguageDao {
    @Insert
    long insert(Language language);

    @Update
    int update(Language language);

    @Query("DELETE FROM language_table")
    int deleteAll();

    @Query("DELETE FROM language_table WHERE id = :id")
    int deleteLanguage(int id);

    @Query("SELECT * from language_table ORDER BY language ASC")
    LiveData<List<Language>> getAllLanguage();
}

@Entity(tableName = "language_table")
public class Language {

    @PrimaryKey(autoGenerate = true)
    @ColumnInfo(name = "id")
    private int id;

    @NonNull
    @ColumnInfo(name = "language")
    private String language;

    @NonNull
    @ColumnInfo(name = "language2")
    private String language2;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public void setLanguage(@NonNull String language) {
        this.language = language;
    }

    public String getLanguage() {
        return language;
    }

    @NonNull
    public String getLanguage2() {
        return language2;
    }

    public void setLanguage2(@NonNull String language2) {
        this.language2 = language2;
    }
}