// 獲得某個月裡共有幾天
//代碼有錯：2009-01-01 傳回了30天，應該是31天
static int countDay(int year, int month) {
if ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0))) {
switch (month) {
case 1:
return 30;
case 2:
return 29;
case 3:
return 31;
case 4:
return 30;
case 5:
return 31;
case 6:
return 30;
case 7:
return 31;
case 8:
return 31;
case 9:
return 30;
case 10:
return 31;
case 11:
return 30;
case 12:
return 31;
}
} else {
switch (month) {
case 1:
return 30;
case 2:
return 28;
case 3:
return 31;
case 4:
return 30;
case 5:
return 31;
case 6:
return 30;
case 7:
return 31;
case 8:
return 31;
case 9:
return 30;
case 10:
return 31;
case 11:
return 30;
case 12:
return 31;
}
}
return 31;
}
// 獲得某個月裡共有幾天
static Integer countDay(Date time) {
Date date = time;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(cal.DATE, 1);
cal.roll(cal.DATE, -1);
// System.out.println(sdf.format(cal.getTime()));
// System.out.println("+++++++++++++");
// System.out.println(cal.get(cal.DAY_OF_MONTH));// 獲得日
return cal.get(cal.DAY_OF_MONTH);
}