How to open Javadoc JAR file in web browser
- Rename the file android.sdk-8.5.201.00.rev.223-javadoc.jar to android.sdk-8.5.201.00.rev.223-javadoc.zip
- Use your favourite unzip tool (WinRAR / WinZIP) to extract it, now you have a folder android.sdk-8.5.201.00.rev.223-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 "android.sdk-8.5.201.00.rev.223-sources.jar" -d "android.sdk-8.5.201.00.rev.223-javadoc" -subpackages 
