JAVA获取当前时间或传入时间的年月日

JAVA获取当前时间的年月日

Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH ) + 1;//获取到0-11，与我们正常的月份差1
int day = cal.get(Calendar.HOUR_OF_DAY);

JAVA获取指定时间的年月

private String getYearMonthDate(String str){SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM");Date date = null;try {date = sdf.parse(str);} catch (ParseException e) {e.printStackTrace();}Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(calendar.MONTH);int year = calendar.get(Calendar.YEAR);int month = calendar.get(Calendar.MONTH) + 1;return month < 10 ? year + "-0" + month : year + "-" + month;
}