Toolbox and JDBC User / Password

All,

Two questions:

1. How do you connect to an AS/400 using the AS400 Toolbox object if you are
running the code on the AS/400 and you want to connect as the current user?

        AS400           system = new AS400("localhost", ?, ?);

2. How do you connect to an AS/400 database using the Toolbox jdbc driver
and the native DB2 jdbc driver if you are running the code on the AS/400 and
you want to connect as the current user?

        Connection      conn = DriverManager.getConnection("localhost", ?,
?);

Thanks,
Etienne