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1   package ch.qos.logback.core.util;
2   
3   import java.util.Calendar;
4   import java.util.Date;
5   
6   public class TimeUtil {
7   
8     
9     public static long computeStartOfNextSecond(long now) {
10      Calendar cal = Calendar.getInstance();
11      cal.setTime(new Date(now));
12      cal.set(Calendar.MILLISECOND, 0);
13      cal.add(Calendar.SECOND, 1);
14      return cal.getTime().getTime();
15    }
16  
17    public static long computeStartOfNextMinute(long now) {
18      Calendar cal = Calendar.getInstance();
19      cal.setTime(new Date(now));
20      cal.set(Calendar.MILLISECOND, 0);
21      cal.set(Calendar.SECOND, 0);
22      cal.add(Calendar.MINUTE, 1);
23      return cal.getTime().getTime();
24    }
25  
26    public static long computeStartOfNextHour(long now) {
27      Calendar cal = Calendar.getInstance();
28      cal.setTime(new Date(now));
29      cal.set(Calendar.MILLISECOND, 0);
30      cal.set(Calendar.SECOND, 0);
31      cal.set(Calendar.MINUTE, 0);
32      cal.add(Calendar.HOUR, 1);
33      return cal.getTime().getTime();
34    }
35    
36    public static long computeStartOfNextDay(long now) {
37      Calendar cal = Calendar.getInstance();
38      cal.setTime(new Date(now));
39  
40      cal.add(Calendar.DAY_OF_MONTH, 1);
41      cal.set(Calendar.MILLISECOND, 0);
42      cal.set(Calendar.SECOND, 0);
43      cal.set(Calendar.MINUTE, 0);
44      cal.set(Calendar.HOUR_OF_DAY, 0);
45      return cal.getTime().getTime();
46    }
47    
48    public static long computeStartOfNextWeek(long now) {
49      Calendar cal = Calendar.getInstance();
50      cal.setTime(new Date(now));
51      
52      cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
53      cal.set(Calendar.HOUR_OF_DAY, 0);
54      cal.set(Calendar.MINUTE, 0);
55      cal.set(Calendar.SECOND, 0);
56      cal.set(Calendar.MILLISECOND, 0);
57      cal.add(Calendar.WEEK_OF_YEAR, 1);
58      return cal.getTime().getTime();
59    }
60  
61    public static long computeStartOfNextMonth(long now) {
62      Calendar cal = Calendar.getInstance();
63      cal.setTime(new Date(now));
64  
65      cal.set(Calendar.DATE, 1);
66      cal.set(Calendar.HOUR_OF_DAY, 0);
67      cal.set(Calendar.MINUTE, 0);
68      cal.set(Calendar.SECOND, 0);
69      cal.set(Calendar.MILLISECOND, 0);
70      cal.add(Calendar.MONTH, 1);
71      return cal.getTime().getTime();
72    }
73    
74    
75  
76  }