java获取当前月份有多少个星期，从星期一到星期天，并列出时间

import javatextSimpleDateFormat;

import javautilCalendar;

public class WeekDemo {

    public static void main(String[] args) {

        printWeeks();

    }

    public static void printWeeks() {

        SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");

        Calendar calendar = CalendargetInstance();

        calendarset(CalendarDATE, 1);

        int month = calendarget(CalendarMONTH);

        int count = 0;

        while (calendarget(CalendarMONTH) == month) {

            if (calendarget(CalendarDAY_OF_WEEK) == CalendarMONDAY) {

                StringBuilder builder = new StringBuilder();

                builderappend("week:");

                builderappend(++count);

                builderappend(" (");

                builderappend(formatformat(calendargetTime()));

                builderappend(" - ");

                calendaradd(CalendarDATE, 6);

                builderappend(formatformat(calendargetTime()));

                builderappend(")");

                Systemoutprintln(buildertoString());

            }

            calendaradd(CalendarDATE, 1);

        }

    }

}

获取本周一

 public static Date getNowWeekMonday(Date date) {    

            Calendar cal = CalendargetInstance();    

             calsetTime(date);    

                  

             caladd(CalendarDAY_OF_MONTH, -1); //解决周日会出现 并到下一周的情况    

            calset(CalendarDAY_OF_WEEK, CalendarMONDAY);    

                 

303            return calgetTime();    

        }

获取上周一

public static Date getLastWeekMonday(Date date) {    

             Date a = DateUtilsaddDays(date, -1);    

            Calendar cal = CalendargetInstance();    

            calsetTime(a);    

            caladd(CalendarWEEK_OF_YEAR, -1);// 一周    

            calset(CalendarDAY_OF_WEEK, CalendarMONDAY);    

                  

             return calgetTime();    

        }

获取上周日

public static Date  getLastWeekSunday(Date date) {    

                 

            Date a = DateUtilsaddDays(date, -1);    

           Calendar cal = CalendargetInstance();    

         calsetTime(a);    

           calset(CalendarDAY_OF_WEEK, 1);    

                 

          return calgetTime();    

        }

代码里面有用到 lapachecommon-ang包 你需要下载下 就可以使用

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