I've found some vim plugins for the eclipse.
one is vimplugin, it uses JTA ( terminal emulator ) and shows the terminal version of vim in the editor tab. For now it works in linux and cygwin environments only. And lack of integration between eclipse and vim.
Another is viplugin, here they re-developed a small version of vim in java. That's not our case, since we are working for vim organization :P
The last one Eclim.. Here they did a reverse implementation. they brought the eclipse features into vim. ( I thought it as useless :)), we will definitely loose a lot of eclipse functionalities )
I'm thinking to get the gvim into action and moving towards it...