Since the Sun->Oracle transition, the search for java-documentation has been a mess. I'm looking to find the official JSR-97 specs:
http://jcp.org/aboutJava/communityprocess/final/jsr097/index.html
Clicking on the link leads a redirecting page, ending up clicking in circles.
On
The details about the JSR are available JSR-97. The last JAVA EE based code based was released to github at GitHub JavaEE - Java Help Repo which is read only.
At first you can check here for JSR-97: http://jcp.org/en/jsr/detail?id=97 JavaHelp 2.0 has been released and is now FCS. It's page is: http://java.sun.com/javase/technologies/desktop/javahelp/ However the JavaHelp project has moved to https://javahelp.dev.java.net/