在Java中如何根据日历周从日历年获取数据周

import java.util.Calendar;

public class Main {
    public static void main(String[] args) {
        // 获取当前日期
        Calendar calendar = Calendar.getInstance();
        int year = calendar.get(Calendar.YEAR);
        int weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);

        // 根据日历周从日历年获取数据周
        int dataWeek = weekOfYear - 1;
        if (dataWeek == 0) {
            // 如果数据周为0，则表示为上一年的最后一周
            Calendar lastYearCalendar = Calendar.getInstance();
            lastYearCalendar.set(Calendar.YEAR, year - 1);
            lastYearCalendar.set(Calendar.MONTH, Calendar.DECEMBER);
            lastYearCalendar.set(Calendar.DAY_OF_MONTH, 31);
            dataWeek = lastYearCalendar.getActualMaximum(Calendar.WEEK_OF_YEAR);
        }

        System.out.println("当前日期所在的数据周：" + dataWeek);
    }
}