A DESCRIPTION OF THE PROBLEM :
set up by a call to setContentHandler
should be: set up by a call to setContentHandlerFactory
and be a link to the method in URLConnection

by defining the URLConnection.contentPathProp property
should be: by defining the java.content.handler.pkgs property
because URLConnection.contentPathProp is a private constant, and thus the user doesn't know what its value is

or null if none of the requested are supported
should be: or null if none of the requested types are supported


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
set up by a call to setContentHandlerFactory
by defining the java.content.handler.pkgs property
or null if none of the requested types are supported

ACTUAL -
set up by a call to setContentHandler
by defining the URLConnection.contentPathProp property
or null if none of the requested are supported


URL OF FAULTY DOCUMENTATION :
http://download.java.net/java/jdk9/docs/api/java/net/ContentHandler.html