public static void main(string args) {
calendar cal = calendar.getinstance();
cal.settime(new date());
//當前年
int year = cal.get(calendar.year);
//當前月
int month = (cal.get(calendar.month))+1;
//當前月的第幾天：即當前日
int day_of_month = cal.get(calendar.day_of_month);
//當前時：hour_of_day-24小時制；hour-12小時制
int hour = cal.get(calendar.hour_of_day);
//當前分
int minute = cal.get(calendar.minute);
//當前秒
int second = cal.get(calendar.second);
//0-上午；1-下午
int ampm = cal.get(calendar.am_pm);
//當前年的第幾周
int week_of_year = cal.get(calendar.week_of_year);
//當前月的第幾周
int week_of_month = cal.get(calendar.week_of_month);
//當前年的第幾天
int day_of_year = cal.get(calendar.day_of_year);
system.out.println("當前年==/t"+year);
system.out.println("當前月==/t"+month);
system.out.println("當前月的第幾天：即當前日===/t"+day_of_month);
system.out.println("當前時hour_of_day-24小時制；hour-12小時制===/t"+hour);
system.out.println("當前分===/t"+minute);
system.out.println("當前分===/t"+second);
system.out.println("0-上午；1-下午==/t"+ampm);
system.out.println("當前年的第幾周/t"+week_of_year);
system.out.println("當前月的第幾周/t"+week_of_month);
system.out.println("當前年的第幾天/t"+day_of_year);
calendar cal1 = calendar.getinstance();
date date=new date();
cal1.settime(date);
calendar cal2 = calendar.getinstance();
cal2.settime(date);
system.out.println(cal1.get(calendar.year)-cal2.get(calendar.year));
system.out.println(cal1.get(calendar.month)-cal2.get(calendar.month));
system.out.println(cal1.get(calendar.month));
system.out.println(cal1.get(calendar.year));
system.out.println(cal1.get(calendar.month)-cal2.get(calendar.year));
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