javax URL was broken

Using "make linkcheck" with sphinx has two problems for me.

One, easily fixed, is this one: the url for javax is broken.

The second is more difficult to fix for me: java files implementing "java.io.Serializable" generate something like

.. java:type:: public class KmsMediaMixer implements org.apache.thrift.TBase<KmsMediaMixer, KmsMediaMixer._Fields>, java.io.Serializable, Cloneable

which leads to: http://www.kurento.org/docs/kms-interface/com/kurento/kms/thrift/api/KmsMediaMixer.html?highlight=serializable and the "io" link is broken.