Записи Java 14 :: дожили ли мы до того, чтобы увидеть, как умирают добытчики и сеттеры?

import static org.junit.Assert.assertTrue;

import java.time.LocalDateTime;
import java.time.Month;
import java.util.Objects;

import org.junit.Test;

import com.danianepg.previewfeature.data.NationalHoliday;
import com.danianepg.previewfeature.data.records.CelebrationGenericRecord;
import com.danianepg.previewfeature.data.records.SpecialDate;

/**
 * Test class to verify the records' functionalities.
 * @author Daniane P. Gomes
 *
 */
public class RecordsDemoTest {

    private String name = "My Bday";
    private Integer day = 20;
    private Month month = Month.OCTOBER;
    private LocalDateTime created = LocalDateTime.now();

    private String country = "Brazil";
    private String nationalHolidayName = "Independence Day";
    private Integer nationalHolidayDay = 7;
    private Month nationalHolidayMonth = Month.SEPTEMBER;

    @Test
    public void specialDateRecord_ok() {

        SpecialDate myBday = new SpecialDate(name, day, month, created);
        boolean isNameEquals = myBday.name().equals(name);
        boolean isDayEquals = myBday.day() == day;
        boolean isMonthEquals = myBday.month() == month;
        boolean isCreatedEquals = myBday.created().equals(created);

        assertTrue(isNameEquals && isDayEquals && isMonthEquals && isCreatedEquals);
    }

    @Test
    public void specialDateRecord_equals_ok() {
        SpecialDate myBday = new SpecialDate(name, day, month, created);
        SpecialDate myBdayCopy = new SpecialDate(name, day, month, created);
        assertTrue(myBday.equals(myBdayCopy));
    }

    @Test
    public void specialDateRecord_alternativeConstructor() {
        SpecialDate myBday = new SpecialDate(name, day, month);
        boolean isCreatedNotNull = !Objects.isNull(myBday.created());
        assertTrue(isCreatedNotNull);
    }


    @Test(expected = IllegalArgumentException.class)
    public void specialDateRecord_exceptionWhenDayOutOfTheRange() {
        try {
            new SpecialDate(name, 32, month);
        } catch (IllegalArgumentException e) {
            System.out.println("Message exception: "+e.getMessage());
            throw e;
        }
    }

    @Test
    public void celebrationGenericRecord_ok() {

        CelebrationGenericRecord dateGenericClassic = new CelebrationGenericRecord<>(
                new NationalHoliday(country), nationalHolidayName, nationalHolidayDay, nationalHolidayMonth);

        boolean isInstanceOfNationalHoliday = dateGenericClassic.contents() instanceof NationalHoliday;
        boolean isCountryEquals = false;

        if (isInstanceOfNationalHoliday) {
            NationalHoliday dateClassic = (NationalHoliday) dateGenericClassic.contents();
            isCountryEquals = dateClassic.getCountry().equals(country);
        }

        assertTrue(isInstanceOfNationalHoliday && isCountryEquals);

    }

}

package com.danianepg.previewfeature.data.records;

import java.time.LocalDateTime;
import java.time.Month;

import com.danianepg.previewfeature.interfaces.CelebrationInterface;

/**
 * An example of a record implementing an interface, validating data, passing default values and using extra static attributes and methods.
 * @author Daniane P. Gomes
 *
 */
public record SpecialDate(String name, Integer day, Month month, LocalDateTime created) implements CelebrationInterface {

    /**
     * Additional static members
     */
    private static int totalDates;

    /**
     * Define validations for the attributtes
     * @param name
     * @param day
     * @param month
     * @param created
     */
    public SpecialDate {
        if (day < 1 || day > 31) {
            throw new IllegalArgumentException("Day must be on the interval 1-31.");
        }

        totalDates++;
    }

    /**
     * Additional constructor, to assign a default value to attribute "created"
     * @param name
     * @param day
     * @param month
     */
    public SpecialDate(String name, Integer day, Month month) {
        this(name, day, month, LocalDateTime.now());
    }

    /**
     * Additional public method to retrieve 
     */
    public int totalDates() {
        return totalDates;
    }

}

package com.danianepg.previewfeature.data.records;

import java.time.Month;

/**
 * Generic record
 * @author Daniane P. Gomes
 *
 * @param 
 */
public record CelebrationGenericRecord(T contents, String name, Integer day, Month month) {
}