title: How do I extract a date from a UUID using Java?
body: <p>How to convert the <code>UUID</code> to date format <code>2011-04-22</code> ?</p>
  
  <p>For example, I have UUID like this</p>
  
  <pre><code>118ffe80-466b-11e1-b5a5-5732cf729524.
  </code></pre>
  
  <p>How to convert this to date format?</p>
  
  <p>I tried     </p>
  
  <pre><code> String uuid="118ffe80-466b-11e1-b5a5-5732cf729524"; 
      UUID uid = UUID.fromString(uuid);
      long ls=convertTime(uid.timeStamp()); // it returns long value
  
      public String convertTime(long time){
              System.out.println("====="+time);
              Date date = new Date(time);
              Format format = new SimpleDateFormat("yyyy/MM/dd");
              return format.format(date).toString();
          }
  </code></pre>
  
  <p><strong>output I got:4294744/11/02</strong></p>
  
  <p><strong>Same case working  fine for perl</strong></p>
  
  <pre><code>$uuid='ef802820-46b3-11e2-bf3a-47ef6b3e28e2';
  $uuid =~ s/-//g;
  
  my $timelow = hex substr( $uuid, 2 * 0,     2 * 4 );
  my $timemid = hex substr( $uuid, 2 * 4,     2 * 2 );
  my $version = hex substr( $uuid, 2 * 6,     1 );
  my $timehi  = hex substr( $uuid, 2 * 6 + 1, 2 * 2 - 1 );
  
  my $time = ( $timehi * ( 2**16 ) + $timemid ) * ( 2**32 ) + $timelow;
  my $epoc = int( $time / 10000000 ) - 12219292800;
  my $nano = $time - int( $time / 10000000 ) * 10000000;
  
  #$time_date = scalar localtime $epoc;
  #print strftime( '%d-%m-%Y %H:%M:%S', localtime($epoc) );
  #print "\n Time: ", scalar localtime $epoc, " +", $nano / 10000, "ms\n";
  </code></pre>