試圖獲取當週的星期一的日期

Question

我已經實施了一種方法來獲取當週的星期一的日期，並且我已將星期一指定爲本週的第一天。

但是，無論我做什麼，它都會返回Sun 3月24日15:03:07 GMT 2013.我看不到問題在這裏。任何人都可以幫忙嗎？

public static Date getFirstDayOfWeekDate() 
{ 
    Calendar cal = Calendar.getInstance(); 
    cal.setFirstDayOfWeek(2); 
    cal.set(Calendar.DAY_OF_WEEK, 
    cal.getActualMinimum(Calendar.DAY_OF_WEEK)); 
    Date firstDayOfTheWeek = cal.getTime(); 
    return firstDayOfTheWeek; 
} 

Answer 1

試試這個：

public static Date getFirstDayOfWeekDate() { 
    Calendar cal = Calendar.getInstance(); 
    cal.set(Calendar.DAY_OF_WEEK, 
      cal.getActualMinimum(Calendar.DAY_OF_WEEK)); 
    Date now = new Date(); 
    cal.setTime(now); 
    int week = cal.get(Calendar.DAY_OF_WEEK); 
    return new Date(now.getTime() - 24 * 60 * 60 * 1000 * (week - 1)); 
} 

Answer 2

它爲我的作品：

Calendar c = Calendar.getInstance(); 
    c.setFirstDayOfWeek(Calendar.MONDAY); 
    c.setTime(new Date()); 
    int today = c.get(Calendar.DAY_OF_WEEK); 
    c.add(Calendar.DAY_OF_WEEK, -today+Calendar.MONDAY); 
    System.out.println("Date "+c.getTime()); 

Answer 3

只需添加一到星期幾：

Calendar cal = Calendar.getInstance(); 
cal.set(Calendar.DAY_OF_WEEK, cal.getActualMinimum(Calendar.DAY_OF_WEEK) + 1); 
return cal.getTime(); 

Answer 4

或用JodaTime

LocalDate.now().withDayOfWeek(DateTimeConstants.MONDAY); 

從Joda Time: First day of week?