急：如何得到月份的最后一天的日期？

Question

Calendar cal = Calendar.getIntance();
cal.add(Calendar.MONTH,1);
cal.add(Calendar.DATE,-1);OK了，现在的cal就是本月的最后一天http://www.javayou.com (Java自由人)

Answer 1

Calendar cal = Calendar.getIntance();
cal.set(Calendar.DAY_OF_MONTH, 1);
cal.add(Calendar.MONTH,1);
cal.add(Calendar.DATE,-1);

Answer 2

Calendar rightNow = Calendar.getInstance();
 int maxDate = rightNow.getActualMaximum(Calendar.DATE);

Answer 3

Calendar mydate= Calendar.getInstance();
int count= mydate.getActualMaximum(Calendar.DATE);

Answer 4

那就这样：
cal.set(Calendar.DAY_OF_MONTH,cal.getActualMaximum(Calendar.DAY_OF_MONTH));