Just follow these steps:
1. Download and extract Eclipse!First of all, you must download Eclipse software on its
website.
Eclipse IDE for Java EE Developers or
Eclipse IDE for Java Developers are both good choices.
The archive have to be directly extracted, generally on the root of your drive (C:/, D:/)
2. First launch of EclipseAt first launch, Eclipse will ask you where your workspace will be located. Try to use a safe partition or another drive, like that all your work will be secured.
3. Installation of SubclipseNow you must install the plugin named
subclipse in order to checkout the project: in the main bar, select
Help->
Install New Software.

From the new window that will popup, press
Add site... and write the following link:
http://subclipse.tigris.org/update_1.10.xEclipse will ask you if you agree about the plugin rules, accept, click on
Install and in the end click on the
Finish button.
4. Call the SVN Repositories windowEclipse will perhaps ask to reload, accept and wait. We have to call a window, which will be used to checkout project, and which comes with the installation of Subclispe. Click at the bar
Window->
Show View->
Other...
In the new window, select the little
SVN folder type, then select
SVN Repositories and click
OK.
5. Write the SVN URL in the SVN Repositories windowOn the new tab, click at
SVN Repositories, then right click anywhere inside and go to
New->
Repository Location....

Click
Finish.
6. Checkout!Last but not least, you must check out datapack and gameserver with the same way.
Select the new location, right click on the SVN link, select
Checkout...
and click in the new window
Finish.
Wait Eclipse download the whole project in order to work on it, depending of your connection it can be 2-10 minutes.
7. Configure compiler path.Your eclipse will try to search the compiler in the wrong direction if you had an old version of JRE installed.You have to change this direction, following those simple instructions :- Window > Preferences. A window will popup.
- Java tab > Installed JREs.--
Ref: acis.i-live.eu/index.php?topic=78.0