I have downloaded Java API documentation from http://www.oracle.com/technetwork/java/javase/downloads/index.html#docs and have supposedly attached it to Eclipse using the
Window->Preferences->Java->Installed JREs->Edit->"Select rt.jar"->Javadoc Location
And the location has been accepted and "Validates" just fine. However, for the life of me, I can't get Eclipse to show the Javadocs in the tooltip whene I hover over an item (for example in the declaration of an ArrayList). I have also restarted Eclipse in attempts to get it to work
What am I doing wrong?
Eclipse doesn't pull the tooltips from the javadoc location. It only uses the javadoc location to prepend to the link if you say open in browser, you need to download and attach the source for the JDK in order to get the tooltips. For all the JARs under the JRE you should have the following for the javadoc location: http://java.sun.com/javase/6/docs/api/. For resources.jar, rt.jar, jsse.jar, jce.jar and charsets.jar you should attach the source available here.