Java获得当前日期是星期几的代码，java星期几, //从 yyyyMM

Java获得当前日期是星期几的代码，java星期几, //从 yyyyMM

  //从 yyyyMMdd 返回 星期几    public static String getDayAndWeek(String day){        if(day.length()<8){            return day;        }           Calendar c = new GregorianCalendar();             DateFormatSymbols dfs = new DateFormatSymbols();             String[] weeks = dfs.getWeekdays();            int year = Integer.parseInt(day.substring(0,4));            int month =Integer.parseInt( day.substring(4,6));            int day_ = Integer.parseInt( day.substring(6,8));            c.set(year, month-1, day_); //Calendar的月从0-11，所以4月是3.            c.get(Calendar.DAY_OF_WEEK);            String week = weeks[c.get(Calendar.DAY_OF_WEEK)];            week = "星期"+week.substring(2);            day = day_+ "("+week+")";            return day;    }