java.lang.NoSuchMethodError exception

Hello All,

I am working on a broker code (4.5 version) . while testing my code I am getting an error below :

Method Not Foundjava.lang.NoSuchMethodError: COM.activesw.api.client.BrokerClient: method getApiVersionNumber()Ljava/lang/String; not found

Can anybody throw light on this error?

Thanks and Regards,
nVarma.