用GregorianCalendar即可
java.util.GregorianCalendar cal = new java.util.GregorianCalendar(year,month,day);
System.out.println(cal.get(cal.WEEK_OF_YEAR));
java.util.GregorianCalendar cal = new java.util.GregorianCalendar(year,month,day);
System.out.println(cal.get(cal.WEEK_OF_YEAR));
int i=xx.getday();
i获得从星期日开始的第几天,如果是周一,i=2
如果想的到从周一开始计算那i-1就可以了