We do not include the javadoc files in the zipped package because Maven can automatically download it for you (when you need it) from our repository server. In NetBeans, you can also force it to download the javadoc by clicking the “Dependencies > suanshu-2.2.0 > Download Javadoc”:

Or, right click “Dependencies” and choose “Download Javadoc” for downloading the javadoc of ALL dependencies:

A little “J” means the javadoc is available offline. Then, by clicking “View Javadoc”, you can see the downloaded javadoc in your browser offline.

Eclipse also has similar functions: