Eclipse requires Java runtime environment (JRE).

Eclipse (with the BIRT Report Designer plug-in) can be downloaded from eclipse project downloads. If you wish to use the CentraSite reporting feature (based on BIRT), you require the Eclipse IDE for Java and Report Developers. The Eclipse download page offers integrated packages that contain both BIRT and the required Eclipse software. If you do not wish to use the CentraSite reporting feature, you can use the Eclipse IDE for Java Developers.

Installing Eclipse simply copies a folder named eclipse into the file system. Consequently, uninstalling Eclipse simply means deleting this folder including all its subfolders.