根据维基百科关于ISO周日期格式的文章,您可以使用以下代码进行计算。
Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, 2015); cal.set(Calendar.MONTH, Calendar.DECEMBER); cal.set(Calendar.DAY_OF_MONTH, 31); int ordinalDay = cal.get(Calendar.DAY_OF_YEAR); int weekDay = cal.get(Calendar.DAY_OF_WEEK) - 1; // Sunday = 0 int numberOfWeeks = (ordinalDay - weekDay + 10) / 7; System.out.println(numberOfWeeks);
更新:
似乎来自@Samuel的答案更好,并且没有Luca提到的错误
快速一线:
Integer weeksOfYear = Calendar.getInstance().getActualMaximum(Calendar.WEEK_OF_YEAR);
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)