获得一周的反应(Get the week correspoding to a day)

 我想让一周对应一个日期。 例如，如果我放置2012年12月24日，我想从太阳获得一周：坐下来，本周应该包含dec24。 
 
 我尝试了几个代码。 目前我正在使用此代码 
 
public static String[] getpreviousweek(int num) {
    // TODO Auto-generated method stub
     Calendar c = Calendar.getInstance();
        // Set the calendar to monday of the current week
        c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
        c.add(Calendar.DATE, num * 7);
        // Print dates of the current week starting on Monday
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);
        String[] days = new String[7];

          for (int i = 0; i < 7; i++) 
             {
                  days[i] = df.format(c.getTime());
                   c.add(Calendar.DAY_OF_MONTH, 1);
             } 
     return days;
 }

I am trying to get the week corresponding to a date. For example if I placed 2012 dec: 24 I want to get the week from sun: to sat and this week should contain dec24. 
 
I tried several codes. Currently I am using this code
 
public static String[] getpreviousweek(int num) {
    // TODO Auto-generated method stub
     Calendar c = Calendar.getInstance();
        // Set the calendar to monday of the current week
        c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
        c.add(Calendar.DATE, num * 7);
        // Print dates of the current week starting on Monday
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);
        String[] days = new String[7];

          for (int i = 0; i < 7; i++) 
             {
                  days[i] = df.format(c.getTime());
                   c.add(Calendar.DAY_OF_MONTH, 1);
             } 
     return days;
 }

原文：https://stackoverflow.com/questions/33080831