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I am getting error while trying to connect opc simulation error with java client
October 12, 2021
16:29, EEST
Forum Posts: 7
Member Since:
October 1, 2021
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Getting Below error while trying to connect simulation server with java client

* Running in EVALUATION mode
* Connections will close after 119 minutes

log4j:WARN No appenders could be found for logger (com.prosysopc.ua.UaApplication).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4…..l#noconfig for more info.
Exception in thread “main” java.lang.NoClassDefFoundError: org/bouncycastle/operator/OperatorCreationException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.prosysopc.ua.stack.utils.CertificateUtils.getCertificateProvider(SourceFile:510)
at com.prosysopc.ua.stack.utils.CertificateUtils.decodeX509Certificate(SourceFile:440)
at com.prosysopc.ua.stack.transport.security.Cert.(SourceFile:85)
at com.prosysopc.ua.client.UaClient.at(SourceFile:6246)
at com.prosysopc.ua.client.UaClient.connect(SourceFile:1006)
at com.prosysopc.ua.samples.client.SimpleClient.main(SimpleClient.java:33)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.operator.OperatorCreationException
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
… 8 more

October 13, 2021
8:11, EEST
Matti Siponen

Forum Posts: 151
Member Since:
February 11, 2020
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This error means that the Bouncy Castle library can’t be found. See the Starting Guide in tutorial folder of the SDK distribution for more information on importing the libraries required by the SDK.

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