Hi all,
I just started using SmartCards.I'm getting the following problem.

Problem is:::::::

D:\smartcards>java com.cmc.test.SampleSign
 Gemplus Card Terminal Version:  4.01.003 Date:  December 10, 1999
 Uses Polling thread techniques Sleeptime: 500

Waiting for card
[INFO     ] com.gemplus.opencard.terminal.GemplusCardTerminal.getCardID
--- message    get the CardID 0
--- thread    Thread[main,5,main]
--- source    class com.gemplus.opencard.terminal.GemplusCardTerminal


=========================
Creating GPK8000 CardServices...

[INFO     ]
opencard.core.service.CardServiceRegistry.getCardServiceInstance
--- message   no CardService for interface
opencard.opt.signature.KeyGenerationC
ardService found
--- thread    Thread[main,5,main]
--- source    opencard.core.service.CardServiceRegistry@540a9454++
registered fa
ctory opencard.opt.util.PassThruCardServiceFactory@69f69454


java.lang.ClassNotFoundException: CardService implementing interface
opencard.op
t.signature.KeyGenerationCardService
        at
opencard.core.service.CardServiceRegistry.getCardServiceInstance(Card
ServiceRegistry.java, Compiled Code)
        at
opencard.core.service.SmartCard.getCardService(SmartCard.java:331)
        at com.cmc.test.SampleSign.<init>(SampleSign.java:47)
        at com.cmc.test.SampleSign.main(SampleSign.java:93)
[INFO     ] opencard.core.service.CardServiceScheduler.releaseSmartCard
--- message   no more SmartCards, closing down
--- thread    Thread[main,5,main]
--- source    opencard.core.service.CardServiceScheduler@9d369454, is
alive

[INFO     ] opencard.core.service.CardServiceScheduler.releaseSmartCard
--- message   no more SmartCards, closing down
--- thread    Thread[main,5,main]
--- source    opencard.core.service.CardServiceScheduler@9d369454, not
alive

[INFO     ] com.gemplus.opencard.terminal.GemplusCardTerminal.close
--- message    close mygcr
--- thread    Thread[main,5,main]
--- source    class com.gemplus.opencard.terminal.GemplusCardTerminal


=========================
VALIDATING the Signature...

Exception in thread "main" java.lang.NullPointerException
        at com.cmc.test.SampleSign.main(SampleSign.java:109)


Can u please inform the solution.Is it a classpath problem or any other.
thanks in advance.
Bye,
Sreenivas,CMCLtd



---
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