Hi Nathan, thank you for the for tips. I did make some progress. 
Notes:
1. No, we currently do not serve web pages from our i server.
2. Change made to default Apache HTTP server: Renamed default index.html to _ORIGINAL_index.html
3. Created new index.html like this ...
   <HTML>
   <HEAD>
   <TITLE>AS/400 Display Session</TITLE>
   </HEAD>
   <BODY>
   <H2>AS/400 Display Session</H2>
   <APPLET
     CODEBASE = "/java/tn5250j"
     CODE     = "org.tn5250j.My5250App.class"
     NAME     = "tn5250j - Java Telnet 5250 Client "
     ALT      = "tn5250j cannot start. Browser may not support Java."
     WIDTH    = 600
     HEIGHT   = 400
     HSPACE   = 0
     VSPACE   = 0
     ALIGN    = top
     ARCHIVE  = "tn5250j.jar"
   >
   <PARAM NAME ="host" VALUE= "10.15.0.10">
   <PARAM NAME ="-e" VALUE= " ">
   </APPLET>
   </BODY>
   </HTML>
4. Added the tn5250j directories (ftp, java, www) to /www/apachedft/htdocs
   htdocs  ---+--- ftp  ---+
              |
              |
              |
              +--- java ---+
              |            |
              |            +--- tn5250j
              |
              +--- www  ---+
                           |
                           +--- images
5. Started the HTTP server APACHEDFT
6. Now When I browse to the server at port 80 I get the following error:
    Exception: java.lang.ClassNotFoundException: org.tn5250j.My5250App.class
From: Bob Schwartz
Does anyone have an example for V5R4 that I could use?
Are you already using your IBM i server to serve web pages? If so, I think that you can place the tn5250j.jar and TN5250JDefault.props files in an IFS directory that is accessible from your Apache server, and reference them from an HTML page.
I think this page will bring up TN5250J on my server, for example:
http://www.radile.com/rdweb/tnj/tnj.html
You may be prompted to download or upgrade your Java plugin. You may need to resize your browser window to have the TN5250J client fill the screen.
I don't know what to suggest without knowing more about what your current set-up is.
-Nathan
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