Can not create WebService with java.util.Locale object why?

I am unable to create a WebService which contains a Locale Object in the request. I assume its because the java.util.Locale object is not Serializable. Can anyone tell me if there is a work around for this?

Hi,
Make sure your strings for Locale follow these rules...
The language string should be lower-case, two-letter codes as defined by ISO-639.
http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt
The country string should be upper-case, two-letter codes as defined by ISO-3166.
http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html
Or try with some constant Locales like
Locale.CANADA
Locale.US
regards,
Uma

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http://developer.java.sun.com/developer/bugParade/bugs/4290801.html
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In multithreading programming, we know that double-checking idiom is broken. But lots of code, even in sun java core libraries, are written using this idiom, like the class "java.util.Locale".
I have submitted this bug report just now,
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java.util.Locale seems not to be thread safe, as I look at the source code.
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Shankar, I understand that this is something books and articles about multithreading don't talk much about, because for marketing reasons, multithreading is supposed to be very simple.
It absolutely not the case.
Multithreading IS a most difficult topic.
First, you must be aware that each processor has its own high-speed cache memory, much faster than the main memory.
This cache is made of a mixture of registers and L1/L2/L3 caches.
Suppose we have a program with a shared variable "public static int a = 0;".
On a multiprocessor system, suppose that a thread TA running on processor P1 assign a value to this variable "a=33;".
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Now, a second thread TB running on processor P2 reads this variable with "System.out.prinln(a);".
The value of "a" is retrieved from main memory, and is 0 !
The value 33 is in the cache of P1, not in main memory where its value is still 0, because the cache of P1 has not been flushed.
When you are using BufferedOutputStream, you use the "flush()" method to flush the buffer, and the "synch()" method to commit data to disk.
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The opening brace "{" of a synchronized block writes the data of the processor cache into the main memory.
Then, the cache is emptied, so that stale values of other data don't remain here.
Inside the "synchronized" block, the thread must thus retrieve fresh values from main memory.
At the closing brace "}", data in the processor cache is written to main memory.
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It is like the elevator algorithm used when you store data into a hard disk.
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This reordering, as well as the arbitrary moment the processor decides to reconciliate parts of its cache to main memory ( if you don't use synchronized ) are the source of the problem.
A thread TB on processor P2 can retrieve a non-null pointer, and retrieve this object from main memory, where it is not yet initialized.
It has been initialized in the cache of P1 by TA, though, but TB doen't see it.
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There is no other way to be safe.
You get the problem, now ?
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Besides, as each access to a shared variable must be done inside a synchronized block, the issue of atomicity is not important at all.
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The only case where atomicity is important is when multiple threads access a single shared variable not in synchronized block. In this case, the variable must be declared volatile, which in theory synchronizes main and cache memory, and make even long and double atomic, but as it is broken in lots of implementation, ... )

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Can not create WebService with java.util.Locale object why?

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