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4 package net.sourceforge.pmd.util;
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10 public final class DateTimeUtil {
11
12 private DateTimeUtil() {}
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18
19 public static String asHoursMinutesSeconds(long milliseconds) {
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21 if (milliseconds < 0) {
22 throw new IllegalArgumentException();
23 }
24
25 long seconds = 0;
26 long minutes = 0;
27 long hours = 0;
28
29 if (milliseconds > 1000) {
30 seconds = milliseconds / 1000;
31 }
32
33 if (seconds > 60) {
34 minutes = seconds / 60;
35 seconds = seconds % 60;
36 }
37
38 if (minutes > 60) {
39 hours = minutes / 60;
40 minutes = minutes % 60;
41 }
42
43 StringBuilder res = new StringBuilder();
44 if (hours > 0) {
45 res.append(hours).append("h ");
46 }
47 if (hours > 0 || minutes > 0) {
48 res.append(minutes).append("m ");
49 }
50 res.append(seconds).append('s');
51 return res.toString();
52 }
53 }