Time type error

Hello,

I am using PostgreSQL 7.2.1, and I am using JDBC interface
to store the data in the db.

I have created a table with a field of "time".
However when I try to insert a time value with a time zone I get the error
ERROR:  Bad time external representation '16:20:00 +04:00'

None of the following values seems to be valid
'16:20:00+04' '16:20:00 +04' '16:20:00 +04:00' '16:20:00+04:00'

Is there any bug in PostgreSQL in handling the type time?

thanks in advance,
Sofia Alexaki