导入maven依赖

<dependency>
       <groupId>cn.hutool</groupId>
       <artifactId>hutool-all</artifactId>
       <version>5.7.20</version>
</dependency>

定义常量类

public class HolidayConstant {
    public final static String NEWYEARDAY = "元旦节";
    public final static String CHINESENEWYEARGREGORIANFESTIVAL = "春节";
    public final static String QINGMINGFESTIVAL = "清明节";
    public final static String LABORDAY = "劳动节";
    public final static String DRAGONBOATGREGORIANFESTIVAL = "端午节";
    public final static String MIDAUTUMNGREGORIANFESTIVAL = "中秋节";
    public final static String NATIONALDAY = "国庆节";
}

获取节日的类

import cn.hutool.core.date.ChineseDate;
import cn.hutool.core.date.DateUtil;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;

public class HolidayUtil {

    /**
     * 获取假期时间
     * @param holidayName 假期名称
     * @param year 当前年份
     * @return
     */
    public static Date getHoliday(String holidayName, int year) {
        switch (holidayName) {
            case HolidayConstant.NEWYEARDAY:
                return DateUtil.parse(year + "-1-1");
            case HolidayConstant.CHINESENEWYEARGREGORIANFESTIVAL:
                ChineseDate chinesenewYearFestival = new ChineseDate(year, 1, 1);
                return chinesenewYearFestival.getGregorianDate();
            case HolidayConstant.QINGMINGFESTIVAL:
                int param = year - 2000;
                int qingmingDay = (int) (param * 0.2422 + 4.81) - param / 4;
                return DateUtil.parse(year + "-4-" + qingmingDay);
            case HolidayConstant.LABORDAY:
                return DateUtil.parse(year + "-5-1");
            case HolidayConstant.DRAGONBOATGREGORIANFESTIVAL:
                ChineseDate dragonBoatFestival = new ChineseDate(year, 5, 5);
                return dragonBoatFestival.getGregorianDate();
            case HolidayConstant.MIDAUTUMNGREGORIANFESTIVAL:
                ChineseDate midAutumnFestival = new ChineseDate(year, 8, 15);
                return midAutumnFestival.getGregorianDate();
            case HolidayConstant.NATIONALDAY:
                return DateUtil.parse(year + "-10-1");
            default:
                return new Date();
        }
    }
}

测试

import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;

public class TestDome {
    public static void main(String[] args) {
        HolidayUtil holidayUtil=new HolidayUtil();
        //LocalDate.now().getYear()获取当前年份
        Date qingmingFestival = holidayUtil.getHoliday(HolidayConstant.QINGMINGFESTIVAL, LocalDate.now().getYear());
        LocalDate localDate = qingmingFestival.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
        System.out.println(HolidayConstant.QINGMINGFESTIVAL +"时间为：" + localDate);
    }
}

测试结果

清明节时间为：2022-04-05