Missing basic JavaDoc in Eclipse

Question

Up to a few days ago, Eclipse was working fine in locating the javadoc for base classes such as Java.io.File. Recently, though, hovering over these classes only yields a message

Answer 1

I had the same problem.

I uninstalled eclipse, removed all eclipse specific data from my user's home- and application data directory, uninstalled all Java JREs and JDKs but nothing helped.

The solution on my system was to change the protocol in the JavaDoc URL from HTTP to HTTPS

e.g. for JRE 7 i changed the URL from http://docs.oracle.com/javase/7/docs/api/ to https://docs.oracle.com/javase/7/docs/api/

(use the steps mentioned by Terry and replace the 'http' with 'https')