获取两个日期之间的间隔天数

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1. /** 
2.  * 获取两个日期之间的间隔天数 
3.  * @return 
4.  */  
5. public static int getGapCount(Date startDate, Date endDate) {  
6.        Calendar fromCalendar = Calendar.getInstance();    
7.        fromCalendar.setTime(startDate);    
8.        fromCalendar.set(Calendar.HOUR_OF_DAY, 0);    
9.        fromCalendar.set(Calendar.MINUTE, 0);    
10.        fromCalendar.set(Calendar.SECOND, 0);    
11.        fromCalendar.set(Calendar.MILLISECOND, 0);    
12.    
13.        Calendar toCalendar = Calendar.getInstance();    
14.        toCalendar.setTime(endDate);    
15.        toCalendar.set(Calendar.HOUR_OF_DAY, 0);    
16.        toCalendar.set(Calendar.MINUTE, 0);    
17.        toCalendar.set(Calendar.SECOND, 0);    
18.        toCalendar.set(Calendar.MILLISECOND, 0);    
19.    
20.        return (int) ((toCalendar.getTime().getTime() - fromCalendar.getTime().getTime()) / (1000 * 60 * 60 * 24));  
21. }