When I connect to the IBM Mainframe, I will
        be connecting to TSO (Time Sharing Option)
        
        I MUST have a TSO UserId/Password these
        are NOT the same as my Windows UserID/Password
        
        When I am connected to TSO, I have GUI tool named ISPF
        that gives me a screen, but I CANNOT use my mouse
        
        
        the Mainframe is a LARGE computer and runs an OS named
        z/OS 
        
        z/OS Mainframe are partitioned into Regions
        (think Virtual Machines)
        
        some of the Regions are TSO-A
                                TSO-B
                                CICS-test
                                CICS-Prod
                                IMS
                                USS (Unix System Services) <- this is where Java run on the MF (Mainframe)
        
        We will be using TSO to create MVS files, look at results of a run, etc
        We will be using USS to hold Unix Files, and my Java code we deployed to the MF
        
        
        MVS files are in code format named EBCDIC
        Unix files are in ACSII format <- core Java can use these
        
        I need the IBM Java extension to work with EBCDIC files
        
        
        --------------------------------------------------------------
        On the Lab Machine, I open the Mainframe connection icon on the desktip
        click the "plug" and select Connect -> MVSF
        
        I enter:
        L TSO
        
        I enter:
        user900 (yours will differ)
        
        I enter my password:
        irs4you
        
        and I see a welcome message, and I press enter to get the GUI
        (I see ***, which means press Enter)
        
        to leave TSO I enter:
        =x
        then logoff
        
        
        -------------------------------------------------------
        
        I am going to leave TSO for a while and go to USS
        
        I do this by entering:
        TSO OMVS
        
        on the command line, and now I am on USS at a Unix prompt
        
        here I can run Unix commands like:
        date
        who
        cal
        ls (a dir listing)
        
        I enter:
        exit (the press enter twice) to get back to TSO
        
        
        
        ---------------------------------------------
        
        The process of Write/Running Java code on the Mainframe
        
        Steps:
        
        1) write the code on my PC using RDz
            and make sure it compiles
            
        2) test the code on the PC (if I can)
            if the code uses Unix files, I can test the run 
            on my PC, if the code uses MVS files I CANNOT 
            run that code on my PC
            
        3) export the code (deploy it) to the Mainframe 
           the code will be in a Java "zip" file 
           called a Jar file (Java Archive)
           and will be on USS 
           
        4) run the Java code on the MF
            A) run via Rdz
            B) run via Unix shell script
            C) run via JCL