This parameter specifies a Java "attachment class" to run when you select the Exit command in the File menu, you click the session's close box, or you invoke the API exit() method. iThe attachment class can then perform any "clean-up" tasks it needs to before the session is exited.
Java attachment classes are a feature of the Reflection Emulator Class Library (ECL) that allow Java code to attach to the currently running terminal session and perform automated tasks. If you write your own Java attachment class, it must be packaged into a user archive file, and the userArchive parameter must be used to specify the name of the archive file. If you use an attachment class built into Reflection, you do not need to add the userArchive parameter when specifying a startup Java class. Java attachment classes must implement the interface ECLAppletInterface.
Value
<a fully qualified Java class name>
Example
NOTE:The <param name="onExitJavaClass" value="com.wrq.eNetwork.ECL.modules.PreventSessionClose"> parameter/value combination helps to prevent a user from closing down their session prior to disconnecting. This parameter/value combo should be used only with sessions that are in their own frame.