I'm also finding that errors and warnings for my Java project aren't being displayed in either the "errors and warning" group or the gutter, as described in this article. For Obj-C, it's working, but no dice for Java.

But I can't even run a Java program that opens a window (Frame). Perhaps these problems are because I did an upgrade install versus an archive-and-install. I'll probably reinstall and see how that goes.

This is from just one day of playing with Panther, but I'd like to know if anybody else experienced these sorts of problems.