I have released the version 3.0 of my open source project JAC (Java Asn1 Compiler) It is available for download now.
In JAC 3.0, direct call of 'encode(..) decode(..)' methods of 'asn.1 Choice' objects are implemented.
And also with version 3.0, user can encode/decode an asn.1 Choice object without knowledge of which element is chosen inside.
Moreover, bugs that users specified via e-mail or blog comments are all fixed.
Version 3.0 is more compatible and error free.