Compiling JDBC interface

PostgreSQL: 6.4.2
OS: Linux 2.2.6
JDK: 1.2

I am trying to get the JDBC interface compiled and I get a very large number
of errors that say:

./postgresql/ResultSet.java:53: class postgresql.ResultSet must be declared
abstract. It does not define void updateTime(int, java.sql.Time) from
interface java.sql.ResultSet.
public class ResultSet implements java.sql.ResultSet

The class names change but the error remains the same? Is this something
that I'm doing wrong, or is it a problem because I'm using JDK 1.2?

TIA,

Adam

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Si hoc legere scis nimium eruditionis habes.