Eclipse -- what is plugin needed for drag-n-drop?

I can’t believe you need a plugin for drag-n-drop to work in Eclipse… I’ve never seen a text editor that doesn’t come with this standard feature built-in…

so what is the plugin I need for this?

version of Eclipse I have:

Eclipse Java EE IDE for Web Developers.

Version: Juno Service Release 1
Build id: 20120920-0800