java獲取上周任意一天的日期
阿新 • • 發佈:2017-09-02
日期 mon || code 第一天 pre 周幾 locale log
public static Date getDayOfWeek(int dayOfWeek,int weekOffset){ if(dayOfWeek>Calendar.SATURDAY || dayOfWeek<Calendar.SUNDAY){ return null; } Calendar date=Calendar.getInstance(Locale.CHINA); //將每周第一天設為星期一,默認是星期天 date.setFirstDayOfWeek(Calendar.MONDAY);//周數減一,即上周 date.add(Calendar.WEEK_OF_MONTH,weekOffset); //日子設為周幾 date.set(Calendar.DAY_OF_WEEK, dayOfWeek); //時分秒全部置0 date.set(Calendar.HOUR_OF_DAY, 0); date.set(Calendar.MINUTE, 0); date.set(Calendar.SECOND, 0); date.set(Calendar.MILLISECOND,0); return date.getTime(); }
java獲取上周任意一天的日期