Shark帮助文档中原文如下：
JavaClassToolAgent - This tool agent executes Java classes, by calling its static method called "execute". When calling this tool agent's invokeApplication() method, the application name parameter should be the full name of the class that should be executed by this tool agent. So far, we defined a few classes that execute simple arithmetic operation, generation of random number, and one that performs waiting. There are also two classes contributed to by Paloma Trigueros Cabezon, and they can be used to use this tool agent to send mails.
This tool agent is able to "understand" the extended attribute with the following name:
AppName - value of this attribute should represent the class name to be executed.
