If you're a vim addict, but need to use Eclipse, you can have your way thanks to the Vim Plugin for Eclipse.
It is based Vim tip #1031 to embed vim in your Java applications, thanks to the Java terminal emulation JTA.
Netbeans alsa has an external editor module, but things don't seem to be active, with no Vim 7 support.
Update: on the other hand, Netbeans has nbvi, a Netbeans module to integrate a java vi/vim clone. And this module is actively supported, with a release early july (2007).