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JDBC Callable Statement Casting Exception

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Last Modified: 2013-12-29
I am trying to execute an ORACLE Funtion using a JDBC Callable statement.  The function returns a Varchar.  When I execute, I get a ClassCastException.  The funtion statment and the method are both below.  What am I doing wrong, JDBC will handle a Varchar, correct?
Oracle Function: 
CREATE OR REPLACE FUNCTION OMSOWNER.PRC_CCA_DELETE_INMATE_FUNCTION (INJLOCAT VARCHAR2, BOOKNUM VARCHAR2, TICKETNUM VARCHAR2)
return varchar2
 
Code:
    public void execute(String jlocat, String booknum, String ticketnum)
        throws SQLException {
 
        String query = useOracleQuery ? oracleQuery : genericQuery;
        System.out.println("Query: " + query + "\n");
        CallableStatement stmt = conn.prepareCall(query);
 
        // register the type of the out param - an Oracle specific type
        stmt.registerOutParameter(1, OracleTypes.VARCHAR);
        //stmt.registerOutParameter(1, OracleTypes.CURSOR);
 
        // set the in param
        stmt.setString(2, jlocat);
        stmt.setString(3, booknum);
        stmt.setString(4, ticketnum);
 
        // execute and retrieve the result set
        stmt.execute();
        ResultSet rs = (ResultSet)stmt.getObject(1);
 
        // print the results
        while (rs.next()) {
            System.out.println(rs.getString(1));
            
        }
 
        rs.close();
        stmt.close();
    }

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