DateConverter.java

package dao;

import java.util.Date;
import androidx.room.TypeConverter;

public class DateConverter {

    @TypeConverter
    public static Date toDate(Long timestamp){
        if(timestamp!=null){
            return new Date(timestamp);
        }
        return null;
    }
    @TypeConverter
    public static Long toTimeStamp(Date date){
        if(date!=null){
            return date.getTime();
        }
        return null;
    }
}