利用Calendar获取时间年和月

Calendar calendar = Calendar.getInstance();

//当前年

int year = calendar.get(Calendar.YEAR);

//当前月

int month = calendar.get(Calendar.MONTH) + 1;

//当前月的天：即当前日
int day_of_month = calendar.get(Calendar.DAY_OF_MONTH);

//当前时
int hour = calendar.get(Calendar.HOUR_OF_DAY);

//当前分
int minute = calendar.get(Calendar.MINUTE);

//当前秒

int second = calendar.get(Calendar.SECOND);

// 0:上午  1：下午
int am_pm = calendar.get(Calendar.AM_PM);

//当前年的第几周
int week_of_year = calendar.get(Calendar.WEEK_OF_YEAR);

//当前月的第几周
int week_of_month = calendar.get(Calendar.WEEK_OF_MONTH);

//当前年的第几天
int day_of_year = calendar.get(Calendar.DAY_OF_YEAR);