To view the documentation from an HTML browser:
Navigate to the bin folder in the STK install directory.
Locate the agi.stk.javadocs.jar.
Extract the agi.stk.javadocs.jar files with WinZip, 7zip, unzip, or "jar -x" to a convenient location, such as your desktop.
Navigate to the directory where you extracted the files.
Double-click the index.html file.
The STK Java API Javadoc documentation will be displayed in your default HTML browser.
STK 11.2.1 Programming Interface