Now when i start jconsole without username/password information (e.g. simply jconsole service:jmx:rmi://127.0.0.1:3000/jndi/rmi://127.0.0.1:9000/server) i get the well known “Connection Failed: Retry?” error message. When i use jconsole’s connection dialog and enter username/password information, everything’s fine and i can connect.

When i start jconsole from jdk 5 without username/password, i get the connection dialog that displays the message “Authentication failed! Credentials required” together with the activated “Advanced” tab containing input fields for username and password. This is much more better because it tells you the cause of the failure. So let’s see when we have the same in the brand new jconsole…