Exception in thread "main" java.lang.IncompatibleClassChangeError: Implementing class

Smack Smack Support
1

Hello,

XMPPTCPConnectionConfiguration.Builder configBuilder = XMPPTCPConnectionConfiguration.builder();

configBuilder.setUsernameAndPassword(“user”, “user”);

configBuilder.setHost(“localhost”);

configBuilder.setPort(5222);

AbstractXMPPConnection connection = new XMPPTCPConnection(configBuilder.build());

connection.connect();

connection.login();

I have an exception

Exception in thread “main” java.lang.IncompatibleClassChangeError: Implementing class