使用java返回string的当前季度第一天和最后一天

以下是使用Java返回当前季度的第一天和最后一天的代码：

import java.time.LocalDate;
import java.time.Month;

public class Main {
    public static void main(String[] args) {
        LocalDate today = LocalDate.now();
        LocalDate startOfQuarter;
        LocalDate endOfQuarter;

        switch (today.getMonth()) {
            case JANUARY:
            case FEBRUARY:
            case MARCH:
                startOfQuarter = LocalDate.of(today.getYear(), Month.JANUARY, 1);
                endOfQuarter = LocalDate.of(today.getYear(), Month.MARCH, 31);
                break;
            case APRIL:
            case MAY:
            case JUNE:
                startOfQuarter = LocalDate.of(today.getYear(), Month.APRIL, 1);
                endOfQuarter = LocalDate.of(today.getYear(), Month.JUNE, 30);
                break;
            case JULY:
            case AUGUST:
            case SEPTEMBER:
                startOfQuarter = LocalDate.of(today.getYear(), Month.JULY, 1);
                endOfQuarter = LocalDate.of(today.getYear(), Month.SEPTEMBER, 30);
                break;
            default:
                startOfQuarter = LocalDate.of(today.getYear(), Month.OCTOBER, 1);
                endOfQuarter = LocalDate.of(today.getYear(), Month.DECEMBER, 31);
                break;
        }

        String startOfQuarterString = startOfQuarter.toString();
        String endOfQuarterString = endOfQuarter.toString();

        System.out.println("当前季度的第一天：" + startOfQuarterString);
        System.out.println("当前季度的最后一天：" + endOfQuarterString);
    }
}

该代码会输出当前季度的第一天和最后一天的字符串形式。例如今天是2021年5月1日，则输出：

当前季度的第一天：2021-04-01
当前季度的最后一天：2021-06-30