The "com.esri.arcgis.defensesolutions" package is still released in 10.1. You have to install MOLE first, and it will put a arcgis_defensesolutions.jar file under your ArcGIS Engine installation. When you add the .jar into Eclipse, you will see the "com.esri.arcgis.defensesolution" package. See the following screeen shot of my Eclipse. [ATTACH=CONFIG]21837[/ATTACH]I am on the same page with you. I didn't see this package information has been included in the 10.1 AO JAVA Help, although .NET AO Help does. This is a documentation bug. Apologize for the confusion has brought to you.Here is the URL to download the MOLE 10.1http://www.esri.com/software/arcgis/defense-solutions/download-mole