29 How to change the second to hour minute day ?
use time unit
long uptime = System.currentTimeMillis();
long days = TimeUnit.MILLISECONDS
.toDays(uptime);
uptime -= TimeUnit.DAYS.toMillis(days);
long hours = TimeUnit.MILLISECONDS
.toHours(uptime);
uptime -= TimeUnit.HOURS.toMillis(hours);
long minutes = TimeUnit.MILLISECONDS
.toMinutes(uptime);
uptime -= TimeUnit.MINUTES.toMillis(minutes);
long seconds = TimeUnit.MILLISECONDS
.toSeconds(uptime);
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