The dom4j website currently shows links to 1.6.1, 2.0.3 and 2.1.4 releases. There are also no javadocs for 2.1.5 nor 2.2.0 in the documentation area.
I found the issue when I attempted to update the javadoc links in my DOM benchmarks page.
Incidentally, dom4j 2.2.0 performs a lot better in the benchmarks than previous versions used to, and even leads some of those related to the processing of small files.
Old elementIterator() processing a 38kB file

New elementIterator()

Old nodeIterator() processing a 38kB file

New nodeIterator()

It is still lagging behind the other implementations in the processing of larger files, but the improvement was important.
The dom4j website currently shows links to 1.6.1, 2.0.3 and 2.1.4 releases. There are also no javadocs for 2.1.5 nor 2.2.0 in the documentation area.
I found the issue when I attempted to update the javadoc links in my DOM benchmarks page.
Incidentally, dom4j 2.2.0 performs a lot better in the benchmarks than previous versions used to, and even leads some of those related to the processing of small files.
Old

elementIterator()processing a 38kB fileNew

elementIterator()Old

nodeIterator()processing a 38kB fileNew

nodeIterator()It is still lagging behind the other implementations in the processing of larger files, but the improvement was important.