Retrieving error information while connecting to JCO

Question

Hello, I'm programing in Java using JCO to connect to SAP. Everything works fine when I introduce good data in the createClient method. The problem is that if I introduce a wrong user/password it do not connect but I get no error code so I don't know how can I show the scpecific error to the user.
Also if the server does not exists an exception happend, I capture the exception and I can show the message as is but, how can I know if the exception is because of the server Id or the server Ip or the client number?
Thanks

Answer 1

Hello,
  JCO exceptions are thrown using the JCO.Exception class.
When you catch the exception object you can find out the key, group and detail message. Based on the group like
JCO_ERROR_LOGON_FAILURE or JCO_ERROR_COMMUNICATION etc. you can take subsequent actions. The text gives you more details.
try {
            client = JCO.createClient .... 
            } catch (JCO.Exception ex) {
              if ( ex.getGroup() == JCO.Exception.JCO_ERROR_COMMUNICATION ) {
              take some action....
              ex.getMessage( )      
Octavian