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Editorial Team

Asked: June 10, 20262026-06-10T02:14:57+00:00 2026-06-10T02:14:57+00:00

I need to get / print on command line every full hour of every

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I need to get / print on command line every full hour of every day of a given year, e.g. 2011 but I am struggling to code it in Java.

Has anybody ever coded this issue?

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Editorial Team

2026-06-10T02:14:59+00:00Added an answer on June 10, 2026 at 2:14 am

This should work:

final DateFormat df = DateFormat.getDateTimeInstance();
final Calendar c = Calendar.getInstance();
c.clear();
for (c.set(2011, Calendar.JANUARY, 1, 0, 0, 0);
     c.get(Calendar.YEAR) == 2011;
     c.add(Calendar.HOUR_OF_DAY, 1))
  System.out.println(df.format(c.getTime()));

Notice, for example, this subtlety in the output:

Oct 30, 2011 12:00:00 AM
Oct 30, 2011 1:00:00 AM
Oct 30, 2011 2:00:00 AM
Oct 30, 2011 2:00:00 AM
Oct 30, 2011 3:00:00 AM

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