A DESCRIPTION OF THE PROBLEM :
The first sentence of the package description for org.w3c.dom has a link for "Java API for XML Processing". The link target is "http://java.sun.com/xml" which no longer exists.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected a working link.
ACTUAL -
The link redirects to "http://www.oracle.com/technetwork/java/index.html" which isn't particularly relevant to XML Processing.

URL OF FAULTY DOCUMENTATION :
http://docs.oracle.com/javase/8/docs/api/org/w3c/dom/package-summary.html