Customized Type Mapping

I'm trying to get customized type mapping working with the JDBC 2.0
development driver (jdbc7.2dev-1.2.jar) and it seems to fail quietly. Is is
supported yet? The code is as follows.

....

ObjectExample2 objectExample = new ObjectExample2();

System.out.println("Getting connected ... " );
con = objectExample.getConnected();

// add our custom type
HashMap map = new HashMap();
map.put("schema.DataObjectTest", Class.forName("DataObjectTest") );

con.setTypeMap( map );

// get the record and output the object
...

The program exits at the attempt to add the type map.

Any suggestions??

-- Art