I've currently got a bit of free time for updating myself, so I've been upgrading my machines to J2sdk1.4. I've run into a couple of problems already though:
- On a project last year we wrote a wrapper implementation of java.sql.Connection to add some helper functionality. In J2sdk1.4 it won't compile any more because Connection has some more methods added - yet I haven't been able to find any 'changes' document explaining or pointing out the changes to the interface.
- I've also been trying to learn XMLC, but this doesn't work for a similar reason - the DOM interfaces it was written against are different from the ones in J2sdk1.4.
Are you using J2sdk1.4 yet? Have you had many problems with it? I'm currently thinking I should back off and wait until some of these other projects have caught up a bit.