Is Java's Date Hadling Good Enough?

In his blog, Stephen Colebourne asks whether the Date and Calendar classes within the JDK are good enough or whether some other library such as Joda Time is a better replacement for date handling.

Stephen is soliciting peoples opinions on whether JDK 7 should contain better date support in an attempt to establish whether a new Date JSR should be made for Java.

All comments positive and negative are invited on Stephen’s blog.