How to open Javadoc JAR file in web browser
- Rename the file sparkbutton-compose-1.0.0-alpha1-javadoc.jar to sparkbutton-compose-1.0.0-alpha1-javadoc.zip
- Use your favourite unzip tool (WinRAR / WinZIP) to extract it, now you have a folder sparkbutton-compose-1.0.0-alpha1-javadoc
- Double click index.html will open the index page on your default web browser.
How to generate Javadoc from a source JAR?
Running the command javadoc:
javadoc --ignore-source-errors -encoding UTF-8 -sourcepath "sparkbutton-compose-1.0.0-alpha1-sources.jar" -d "sparkbutton-compose-1.0.0-alpha1-javadoc" -subpackages 
