JDBC driver compilation error

Hi,
I am using Postgresql 7.3.3 version. I have a Java application that talks to the database using JDBC. I wanted to use CallableStatement for functions that return refcursor. Since 7.3.3 jdbc driver does not support this feature (ofcourse I know it supports CallableStatement but not for invoking functions that return Refcursor), I had to get the latest JDBC sources from the CVS web and compile the driver. I am getting the following compilation errors. Can anyone please let me know how to get rid off them?

[javac] symbol : method getOffset (long)
[javac] location: class java.util.TimeZone
[javac] localoffset = java.util.Calendar.getInstance().getTimeZone().getOffset(millis);
[javac] ^
[javac] /root/postgresql-7.3.3/src/interfaces/jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java:2104: cannot resolve
symbol
[javac] symbol : method getOffset (long)
[javac] location: class java.util.TimeZone
[javac] localoffset = java.util.Calendar.getInstance().getTimeZone().getOffset(millis);
[javac] ^
[javac] /root/postgresql-7.3.3/src/interfaces/jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java:2149: cannot resolve
symbol
[javac] symbol : method getOffset (long)
[javac] location: class java.util.TimeZone
[javac] localoffset = java.util.Calendar.getInstance().getTimeZone().getOffset(millis);
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -deprecation for details.
[javac] 3 errors

Thanks and Regards,
Arun Desai.