Java Assertions to Code (JAC) is the tool which is used to generate the code from contracts of the method in Java. COFOJA is used to write contracts and JDT is used to create abstract syntax tree for parsing and manipulation of Java file.
The Java Accessibility Client project is designed to offer access to java-based applications for blind or low-vision persons needing to use java applications.
JAC (Java Asn1 Compiler) is a tool for you if you want to (1)parse your asn1 file (2)create .java classes and (3)encode/decode instances of your classes. Just forget all asn1 byte streams, and take the advantage of OOP! BER, CER and DER are all supported