Demo example retrofit?

Question

package com.slayertech.retrofitexample.databasenn;

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

import android.util.Log;

import androidx.annotation.Nullable;

import com.slayertech.retrofitexample.Modelclass;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import java.util.ArrayList;

import java.util.List;

public class MyDatabase extends SQLiteOpenHelper {

public MyDatabase(@Nullable Context context) {

    super( context, "myconversation.db", null, 1 );

}

@Override

public void onCreate(SQLiteDatabase db) {

    String query = "create table conversationsave(alid text,id integer primary key, title text,img text,bookmark text)";

    db.execSQL( query );

}

@Override

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    onCreate( db );

    String query = "drop table if exists conversationsave";

    db.execSQL(query);

}

public boolean insertData(String alid,int id, String title,String img,String bookmark) {

    SQLiteDatabase database = getWritableDatabase();

    ContentValues contentValues = new ContentValues();

    contentValues.put("alid", alid);

    contentValues.put("id", id);

    contentValues.put("title", title);

    contentValues.put("img", img);

    contentValues.put("bookmark", bookmark);

    database.insert("conversationsave", null, contentValues);

    return false;

}

public void Update_converation(String str, String updatevalue) {

    SQLiteDatabase db = getWritableDatabase();

    Log.e("qry", "update conversationsave set bookmark='" + updatevalue + "' where id=" + str);

    String qr = "update conversationsave set bookmark='" + updatevalue + "' where id=" + str;

    db.execSQL(qr);

}

public Cursor getData() {

    SQLiteDatabase database = getReadableDatabase();

    String query = "select * from conversationsave";

    Cursor cursor = database.rawQuery(query, null);

    return cursor;

}

//----Data---GET--IN--SAVEDCHAT--FRAGMENT-----

// https://androidtutorialsdemo.blogspot.com/2021/07/favourite-list-in-android-studio-sqlite.html

}

Demo demo demo example