Solved Spigot Javadoc not working

Using the built 1.8.8 R3 javadoc and the online javadoc, everything related to Bukkit doesn't works.
Basic java functions have their information displayed, but not the ones from bukkit, spigot and craftbukkit.
Screenshots as example below.
Strange, isn't it ?

Also, happens using JDK and JRE, with rt.jar using the javadoc (and not empty)

 

Have you actually imported Bukkit? Or are we just using things from an imaginary API?

 

@Betagear
I had and have the same error, with the Spigot Javadoc and jd.bukkit.org. IntelliJ displays the webpage, but is also unable to correctly gather the information. Eclipse says the javadoc is in a unknown (or invalid, can't remember right now) format. This worked for me though.

 

@timtower Using https://hub.spigotmc.org/javadocs/spigot/ and Maven compiled javadoc in Bukkit with mvn javadoc:javadoc


@I Al Istannen This isn't a javadoc, and if I add it to my build path, it still doesn't show up and outputs errors.

 

@Betagear
It is my friend. Just follow his explanation. I use it too.

Here is one for Bukkit selected:

 

@I Al Istannen I'm on eclipse, and so I can't use a javadoc in archive, only a web javadoc. Do I need to unjar it ?

 

@Betagear
Just a screenshot:


Archive can also be a jar.

 

@I Al Istannen Thanks ! Now it works

@I Al Istannen Spoke too soon : I've got a bug :
View attachment 27119

Auto-complete doesn't works as intended.

EDIT : It deactivated in Eclipse, turned it on again. now it works :
Windows->Preferences->Java->Editor->Content Assist->Advanced
and click restore default to fix this bug.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.