Java获得当前日期是星期几的代码

[java]代码库

  //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;
    }

//源代码片段来自云代码http://yuncode.net