getRefCursor() is deprecated - Mailing list pgsql-docs

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Page: https://www.postgresql.org/docs/7.4/static/jdbc-callproc.html
Description:

https://jdbc.postgresql.org/documentation/publicapi/org/postgresql/PGRefCursorResultSet.html

java.lang.String getRefCursor()

Deprecated. As of 8.0, replaced with calling getString() on the ResultSet
that this ResultSet was obtained from.