SubhrajyotiSen

compile "android.arch.lifecycle:extensions:1.0.0"
compile "android.arch.persistence.room:runtime:1.0.0"
annotationProcessor "android.arch.lifecycle:compiler:1.0.0"
annotationProcessor "android.arch.persistence.room:compiler:1.0.0"

SubhrajyotiSen

//..
allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
}
//..

SubhrajyotiSen

import java.util.Date;
@Entity
public class BorrowModel {

    @PrimaryKey(autoGenerate = true)
    public int id;
    private String itemName;
    private String personName;
    @TypeConverters(DateConverter.class)
    private Date borrowDate;

SubhrajyotiSen

import java.util.Date;
class DateConverter {

    @TypeConverter
    public static Date toDate(Long timestamp) {
        return timestamp == null ? null : new Date(timestamp);
    }

    @TypeConverter
    public static Long toTimestamp(Date date) {

SubhrajyotiSen

@Dao
@TypeConverters(DateConverter.class)
public interface BorrowModelDao {

    @Query("select * from BorrowModel")
    LiveData<List<BorrowModel>> getAllBorrowedItems();

    @Query("select * from BorrowModel where id = :id")
    BorrowModel getItembyId(String id);

SubhrajyotiSen

@Database(entities = {BorrowModel.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {

    private static AppDatabase INSTANCE;

    public static AppDatabase getDatabase(Context context) {
        if (INSTANCE == null) {
            INSTANCE =
                    Room.databaseBuilder(context.getApplicationContext(), AppDatabase.class, "borrow_db")
                            .build();

SubhrajyotiSen

public class BorrowedListViewModel extends AndroidViewModel {

    private final LiveData<List<BorrowModel>> itemAndPersonList;

    private AppDatabase appDatabase;

    public BorrowedListViewModel(Application application) {
        super(application);

SubhrajyotiSen

public class MainActivity extends AppCompatActivity implements View.OnLongClickListener {

    private BorrowedListViewModel viewModel;
    private RecyclerViewAdapter recyclerViewAdapter;
    private RecyclerView recyclerView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

SubhrajyotiSen

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.RecyclerViewHolder> {

    private List<BorrowModel> borrowModelList;
    private View.OnLongClickListener longClickListener;

    public RecyclerViewAdapter(List<BorrowModel> borrowModelList, View.OnLongClickListener longClickListener) {
        this.borrowModelList = borrowModelList;
        this.longClickListener = longClickListener;
    }

SubhrajyotiSen

#include<bits/stdc++.h>
using namespace std;

#define FOR(i,n,a) for(int i=a;i<=n;i++)
#define FORN(i,n,a) for(int i=a;i<n;i++)

typedef long long ll;

int main() {
  ios_base::sync_with_stdio(false);