Eclipse – Missing library: xdoclet-1.2.1.jar

Go to http://sourceforge.net/projects/xdoclet/files/xdoclet/1.2.1/ and download the zip xdoclet-src-1.2.1.zip. Unzip it somewhere on your pc and in eclipse point the XDoclet Home to the extracted directory which contains all the jar files. Click apply to save the change.

E.g.