Wrappers Each isCOBOL product, from Compiler to Application Server, is identified by a java class. The standard way to launch these classes would be by adding the library in which they're stored to the Classpath and by issuing the command: java ClassName However, since this kind of approach would generate long commands and would require some efforts in the Classpath configuration, wrappers are provided along with isCOBOL. These wrappers are identified by exe files on the Windows platform and by shell script files on other platforms. They're stored in the isCOBOL bin directory. When you launch a wrapper, the current directory (".") and all the jar libraries stored in the isCOBOL lib directory are automatically added to the Classpath, then your command is translated as follows: wrapper_name Parameters becomes java iscobol_poduct_class Parameters