特定年份的特定月份的天数？

Question

特定年份的特定月份的天数？

如何知道特定年份的特定月份有多少天？

String date = "2010-01-19";

String[] ymd = date.split("-");

int year = Integer.parseInt(ymd[0]);

int month = Integer.parseInt(ymd[1]);

int day = Integer.parseInt(ymd[2]);

Calendar calendar = Calendar.getInstance();

calendar.set(Calendar.YEAR,year);

calendar.set(Calendar.MONTH,month);

int daysQty = calendar.getDaysNumber(); // Something like this