Result Set from a DB2 stored procedure

[Richard Olmstead]

Hello colleagues,
My Java call to a DB2 stored procedure isn't working... the error is
String Literals not supported in procedure calls to DB2/390

and, the code is
String inp = "76021592220080101" ;
String sql = "{call ? := G714.GDDPOHP2(?)} " ;

CallableStatement callable = conn.prepareCall( sql );
callable.registerOutParameter(1, java.sql.Types.CHAR);
callable.setString(2, inp);

I'd be grateful for any advice.