A DESCRIPTION OF THE PROBLEM :
The link : http://www.socs.uts.edu.au/MosaicDocs-old/url-primer.html
DOES not work.

In Java 5 JavaDoc (http://docs.oracle.com/javase/1.5.0/docs/api/java/net/URL.html) You have another link to some archive web: http://archive.ncsa.uiuc.edu/SDG/Software/Mosaic/Demo/url-primer.html
But it does not work either.

In Java 8 JavaDoc the link is OK: http://web.archive.org/web/20051219043731/http://archive.ncsa.uiuc.edu/SDG/Software/Mosaic/Demo/url-primer.html

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Update or remove the link at all
ACTUAL -
In Java <8 Javadoc for Class URL is dropped link.

URL OF FAULTY DOCUMENTATION :
http://docs.oracle.com/javase/7/docs/api/java/net/URL.html