The following two links give java.ioException when accessed via HttpClient and reports of a misconfigured website when accessed from Firefox

open/src/java.base/share/classes/java/util/Date.java: * <a href="http://www.usno.navy.mil/USNO">http://www.usno.navy.mil/USNO&lt;/a>
open/src/java.base/share/classes/java/util/Date.java: * <a href="http://www.usno.navy.mil/USNO/time/master-clock/systems-of-time">http://www.usno.navy.mil/USNO/time/master-clock/systems-of-time&lt;/a>

For full recent list of external links, see http://cr.openjdk.java.net/~jjg/extLink.html