This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
David Newton wrote:So create a new Eclipse project over the existing source.
Or export the NetBeans project as a jar and import into Eclipse. This will get rid of the NetBeans specific parts. (NetBeans sometimes or always stores things in a different file structure than most IDEs.)