Java classes with dynamic fields

Question

I\'m looking for clever ways to build dynamic Java classes, that is classes where you can add/remove fields at runtime. Usage scenario: I have an editor where users should be ab

Answer 1

I do almost the same, it's pure Java solution:

1. Users generate their own models, which are stored as JAXB schema.
2. Schema is compiled in Java classes on the fly and stored in user jars
3. All classes are forced to extend one "root" class, where you could put every extra functionality you want.
4. Appropriate classloaders are implemented with "model change" listeners.

Speaking of performance (which is important in my case), you can hardly beat this solution. Reusability is the same of XML document.