The Javadoc is located under the client directory in your installation directory as a zip file.
In this page will show how to import the Javadoc into Eclipse
In order to add the Javadoc to the Silk Mobile projects in Eclipse need to do the following:
In Eclipse, right click on the project. Choose project properties-> "Java build path".
After the project has been integrated, you should have the imageClient.jar in the list.
Choose it and expand it to reveal the "Javadoc location".
Stand on the "Javadoc location" and press "Edit".
Choose the option "Javadoc in archive" and choose the .zip file from the "<installation folder>\clients\java" folder.
Press OK and refresh the project. You will get description to all the Client methods when you will hover over them.