java时间处理工具类CalendarUtil(java源码)

packagecom.hexiang.utils;importjava.text.SimpleDateFormat;importjava.util.*;publicclassCalendarUtil{publicstaticvoidmain(Stringargs[]){System.out.println("Firstdayofweekis:"+newSimpleDateFormat("yyyy-MM-dd").format(getFirstDateByWeek(newDate())));System.out.println(