JCraft has released JZlib 1.0.7,
a reimplementation of Jean-loup Gailly
and Mark Adler's zlib compression library in pure Java.
This offers more complete functionality than java.util.zip.
JetBrains has released IntelliJ IDEA 5.0.1, a popular $499 payware integrated development environment for Java that runs on Windows, Mac OS X, Linux, and Unix.
Mostly this is a bug fix release, but it also adds
a @NonNls for marking strings that don't need to be localized.