Better JFileChooser alternatives for OS X, Linux?

Question

JFileChooser, at least under OS X, produces a very half-baked open dialog that doesn't support things like typing in the start of a file name to select it or disclosure triangles.

Does anyone know of a 3rd-party alternative that has a more fully-featured behaviour? Ideally, I'd like one for each major platform. I'm aware of XFileDialog for windows, but what about Mac and Linux/Unix?

In comparison:

Answer 1

Does java.awt.FileDialog do what you want, you may need to specify

System.setProperty("apple.awt.fileDialogForDirectories", "true");

if you want to get a directory though

Answer 2

I found the Quaqua Look & Feel, which upgrades JFileChooser a bit - it's still not perfect, but it's arguably better.