Status of Arrays in JDBC with PostgreSQL 7.3.1

We have a DB in which columns containing inet[] arrays are defined. My
attempts to use Array.getArray() or getResultSet() to read them back
leads to "unimplemented method" errors from Driver. The compliance page
says "Arrays should be supported as of 7.2" and at least one recent
email describes a successful readback of a Numeric[] of Integers. Is
there anything I can do at this point?
                                 Rich Cullingford