A bug in the SimpleDateFormat ?

Question

When i parse the string "2089-03-28" with the SimpleDateFormat class, the result's timeZone change from CET to CEST...
There is a difference of 1 hour between the two timeZone. So i'm not able to (exactly) compute the difference (in day) between two date.
why? is it a bug ?
Here is the code :
s1 = "2089-03-27";
s2 = "2089-03-28";
sdf = new SimpleDateFormat("yyyy-MM-dd");
d1 = sdf.parse(s1);
d2 = sdf.parse(s2);
System.out.println(s1 + " -> " + d1.toString() + " -> " + d1.getTime());
System.out.println(s2 + " -> " + d2.toString() + " -> " + d2.getTime());
diff = (d2.getTime() - d1.getTime());
div = 24 * 60 * 60 * 1000; // # number of ms in a day
res = diff / div; // give me the number of day between the two date
System.out.println(diff + " / " + div + " = " + res);
System.out.println(diff + " - " + div + " = " + (diff-div));here is the result :
2089-03-27 -> Sun Mar 27 00:00:00 CET 2089 -> 3762716400000
2089-03-28 -> Mon Mar 28 00:00:00 CEST 2089 -> 3762799200000
8.28E7 / 8.64E7 = 0.9583333333333334
8.28E7 - 8.64E7 = -3600000.0i used a little workaround. So i did my job correctly but i wish to known what the SimpleDAteFormat do...
Thanks for any help.

Answer 1

i try with another date between 200-01-01 and
2089-03-27 and it always work!
It seems that SimpleDateFormat don't like the date
"2089-03-28". Why? I want to know... ;-)You were given the answer. What was confusing about the replies you received?