Java Calendar获取时间的月和日

Calendar cal = Calendar.getInstance(); // 当前年 int year = cal.get(Calendar.YEAR); // 当前月 int month = (cal.get(Calendar.MONTH)) + 1; // 当前月的第几天：即当前日 int day_of_month = cal.get(Calendar.DAY_OF_MONTH); // 当前时：HOUR_OF_DAY-24小时制；HOUR-12小时制 int hour = cal.get(Calendar.HOUR_OF_DAY); // 当前分 int minute = cal.get(Calendar.MINUTE); // 当前秒 int second = cal.get(Calendar.SECOND); // 0-上午；1-下午 int ampm = cal.get(Calendar.AM_PM); // 当前年的第几周 int week_of_year = cal.get(Calendar.WEEK_OF_YEAR); // 当前月的第几周 int week_of_month = cal.get(Calendar.WEEK_OF_MONTH); // 当前年的第几天 int day_of_year = cal.get(Calendar.DAY_OF_YEAR);