ECC implementation

Dear everyone,
Really sorry if this sounds dumb coz i am totally new to java cryptography n have worked with only swing all this while). I am trying to implement Elliptic curve cryptography with ECDH key exchange. However after readin quite a lot, i have the following doubts. They say, sun offers support for ECC thru Java Crypto Extension(JCE). Does that eliminate the need for a provider like Bouncy castle. If Sun directly support ECC classes(thereby eliminating need for provider), are there any axamples related to the same. If not, is Bouncy Castle really reliable or there any other good providers for implementing ECC->ECDH->MAC

JavaNovicer wrote:
lol... actually "they" refers to the internet... jus came out that way.. Still much too vague. I didn't think that Sun had implemented ECC in their JCE provider which is why I was asking about who 'they' was. A URL would be nice.
anyways so u r convinced it is best to use Bouncy castle if i am trying to implement ECC???I never said I was convinced it is the best. I have never used ECC in anger and know little about it except through some simple tests. I just said that Bouncy Castle was a generally well regarded provider.

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