yeah it's kind of a big deal to them ...

"Joda-Time makes heavy use of the immutability design pattern, and all 
immutable classes in Joda-Time are thread-safe. Many mutable classes whose 
instances are not likely to be shared are not thread-safe, and are documented 
as such."

On Oct 1, 2010, at 4:34 PM, Ramsey Gurley wrote:

> 
> On Oct 1, 2010, at 3:25 PM, Ray Kiddy wrote:
> 
>> 
>> On Oct 1, 2010, at 11:54 AM, Ramsey Gurley wrote:
>> 
>>> Aaaaand, I'm wrong
>>> 
>>>      GregorianCalendar gc = new GregorianCalendar(2009,2,13,14,36,45);
>>>      TimeZone pst = TimeZone.getTimeZone( "PST" );
>>>      TimeZone est = TimeZone.getTimeZone( "EST" );
>>>      gc.setTimeZone( pst );
>>>      System.out.println(gc.getTimeInMillis());
>>>      gc.setTimeZone( est );
>>>      System.out.println(gc.getTimeInMillis());
>>> 
>>> gives me output of:
>>> 
>>> 1236980205000
>>> 1236980205000
>>> 
>>> D'oh!  I'll go back to *not* thinking about dates again. (^_^)  Word to the 
>>> wise... Chuck Hill is always right.
>>> 
>>> Ramsey
>> 
>> Now if we could get Chuck to write all of our code, we would be golden!
>> 
>> Until then, some of us have to figure out something to do. Maybe we can use 
>> joda! :-)
>> 
>> - ray
>> 
> 
> It sounds like Joda has lots of fans.  Does anyone who has worked with it 
> know if they have immutable data types?
> 
> Ramsey
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