postgres 7.3 won't compile with jdbc

make[3]: Entering directory `/local/download/src/postgresql-7.3/src/interfaces/jdbc'
/usr/local/ant/bin/ant -buildfile ./build.xml all \
-Dmajor=7 -Dminor=3 -Dfullversion=7.3 -Ddef_pgport=5432 -Denable_debug=yes
Buildfile: ./build.xml

all:

prepare:
[mkdir] Created dir: /local/download/src/postgresql-7.3/src/interfaces/jdbc/build
[mkdir] Created dir: /local/download/src/postgresql-7.3/src/interfaces/jdbc/jars

check_versions:

driver:
[copy] Copying 1 file to /local/download/src/postgresql-7.3/src/interfaces/jdbc/org
/postgresql
[echo] Configured build for the JDBC2 edition driver

compile:
[javac] Compiling 56 source files to /local/download/src/postgresql-7.3/src/interfac
es/jdbc/build
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:240: cannot resolve symbol
[javac] symbol : constructor Array (org.postgresql.PGConnection,int,org.postgresql
.Field,java.sql.ResultSet)
[javac] location: class org.postgresql.jdbc2.Array
[javac] return (java.sql.Array) new org.postgresql.jdbc2.Array( connecti
on, i, fields[i - 1], (java.sql.ResultSet) this );
[javac] ^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:420: incompatible types
[javac] found : java.sql.Statement
[javac] required: org.postgresql.jdbc2.Statement
[javac] return statement;
[javac] ^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:560: incompatible types
[javac] found : java.sql.PreparedStatement
[javac] required: org.postgresql.jdbc2.PreparedStatement
[javac] deleteStatement = ((java.sql.Connection) connection).pre
pareStatement(deleteSQL.toString());
[javac]
^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:619: incompatible types
[javac] found : java.sql.PreparedStatement
[javac] required: org.postgresql.jdbc2.PreparedStatement
[javac] insertStatement = ((java.sql.Connection) connection).pre
pareStatement(insertSQL.toString());
[javac]
^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:639: inconvertible types
[javac] found : org.postgresql.jdbc2.PreparedStatement
[javac] required: org.postgresql.jdbc2.AbstractJdbc2Statement
[javac] long insertedOID = ((AbstractJdbc2Statement) ins
ertStatement).getLastOID();
[javac]
^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:955: incompatible types
[javac] found : java.sql.PreparedStatement
[javac] required: org.postgresql.jdbc2.PreparedStatement
[javac] selectStatement = ((java.sql.Connection) connection).pre
pareStatement(selectSQL.toString());
[javac]
^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2ResultSet.java:1038: incompatible types
[javac] found : java.sql.PreparedStatement
[javac] required: org.postgresql.jdbc2.PreparedStatement
[javac] updateStatement = ((java.sql.Connection) connect
ion).prepareStatement(updateSQL.toString());
[javac]
^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
AbstractJdbc2Statement.java:51: inconvertible types
[javac] found : org.postgresql.jdbc2.AbstractJdbc2Statement
[javac] required: org.postgresql.jdbc2.Statement
[javac] ((AbstractJdbc2ResultSet)result).setStatement((Statement)this);
[javac] ^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
Array.java:49: inconvertible types
[javac] found : org.postgresql.jdbc2.ResultSet
[javac] required: org.postgresql.jdbc2.AbstractJdbc2ResultSet
[javac] this.rawString = ((AbstractJdbc2ResultSet)rs).getFixedString(idx
);
[javac] ^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
Jdbc2Connection.java:14: org.postgresql.jdbc2.Jdbc2Connection should be declared abstrac
t; it does not define getResultSet(java.sql.Statement,org.postgresql.Field[],java.util.V
ector,java.lang.String,int) in org.postgresql.jdbc1.AbstractJdbc1Connection
[javac] public class Jdbc2Connection extends org.postgresql.jdbc2.AbstractJdbc2Conne
ction implements java.sql.Connection
[javac] ^
[javac] /local/download/src/postgresql-7.3/src/interfaces/jdbc/org/postgresql/jdbc2/
Jdbc2ResultSet.java:13: getStatement() in org.postgresql.jdbc2.AbstractJdbc2ResultSet ca
nnot implement getStatement() in java.sql.ResultSet; attempting to use incompatible retu
rn type
[javac] found : org.postgresql.jdbc2.Statement
[javac] required: java.sql.Statement
[javac] public class Jdbc2ResultSet extends org.postgresql.jdbc2.AbstractJdbc2Result
Set implements java.sql.ResultSet
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -deprecation for details.
[javac] 11 errors

BUILD FAILED
file:/local/download/src/postgresql-7.3/src/interfaces/jdbc/build.xml:104: Compile faile
d; see the compiler error output for details.

Total time: 25 seconds
make[3]: *** [all] Error 1
make[3]: Leaving directory `/local/download/src/postgresql-7.3/src/interfaces/jdbc'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/local/download/src/postgresql-7.3/src/interfaces'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/local/download/src/postgresql-7.3/src'
make: *** [all] Error 2
Command exited with non-zero status 2

-------------------
My java version:
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)