Foreign key constraint & getErrorCode

I'm using PostgreSQL 7.4.2 on Fedora Core 2 (included RPMS). When a
foreign key constraint fails during an insert, SQLException.getErrorCode
is returning zero.

Here is a code snippet to demonstrate the problem:

import java.io.*;
import java.sql.*;

class ForeignKey
{
public static void main(String [] args) throws Exception
{
Class.forName("org.postgresql.Driver");
Connection db = DriverManager.getConnection(args[0], args[1],
args[2]);
Statement st = db.createStatement();

st.execute("CREATE TABLE table1 (id INT PRIMARY KEY)");

st.execute("CREATE TABLE table2 (id INT PRIMARY KEY, " +
"fk INT NOT NULL REFERENCES " +
"table1)");

try
{
st.execute("INSERT INTO table2 (id, fk) VALUES (0, 0)");
}
catch (SQLException sqle)
{
System.err.println(sqle.getErrorCode() + ": " +
sqle.getMessage());
}
}
}

And here's what I get when I run it:

[pilcher(at)home temp]$ echo $CLASSPATH
.:/usr/share/java/pg74.1jdbc3.jar
[pilcher(at)home temp]$ java ForeignKey jdbc:postgresql:tomcat4 tomcat4 ''
0: ERROR: insert or update on table "table2" violates foreign key
constraint "$1"

Based on my reading of the PostgreSQL docs, getErrorCode should be
returning 23503. Any idea what's going on?

Thanks!

--
========================================================================
Ian Pilcher i(dot)pilcher(at)comcast(dot)net
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