jdbc/redhat8.0/postgresql upgrade - Mailing list pgsql-jdbc

I just recently upgraded my postgresql to version 7.2.2-1 on my RedHat box.

JDBC was working before the upgrade.  Now, I get this error message:
ClassNotFoundException: org.postgresql.Driver

Under the old setup I had the /usr/java directory in my CLASSPATH and in that directory I had a link to
/usr/share/pgsql/pgjdbc2.jar
lrwxrwxrwx    1 root     root           28 Jan  6 03:38 postgresql.jar -> /usr/share/pgsql/pgjdbc2.jar

I removed that link and replaced it with a link to
/usr/share/pgsql/jdbc7.2dev-1.2.jar, but that did not help.

I did review the archives in this mailing list carefully and could not
find anything that directly answered my issue.

Many thanks in advance.