Host On-Demand Version 8.0 includes the IBM 32-bit Runtime Environment for Java 2, v1.4.0 for Windows clients. This plug-in for Windows clients is included with Host On-Demand Version 8.0 for all platforms (Windows, AIX, and so on).
To download this Java 2 plug-in from the server,
clients running on Windows
should attach to hodmain.html on the server,
click on IBM 32-bit Runtime Environment for Java 2,
and follow the instructions.
When using Host On-Demand HTML pages on a client with the Java 2 plug-in installed, the Java 2 detection logic will sometimes indicate that Java 2 is not installed. This means that HTML pages that require Java 2 will fail, and Host On-Demand will ask if the client would like to download and install the Java 2 plug-in. For HTML pages that have the Java type set to Detect, Java 2 will not be detected, and the Java 1 JVM will be invoked.
This failure to detect Java 2 may occur immediately after installation of the plug-in or after a reboot of the computer. To resolve the problem, close and restart the browser, and then load the HTML page again.
Using the IBM Windows Plug-in, Java 2 Technology Edition, Version 1.3.1, if the Java Console is configured to start when the plug-in starts, Internet Explorer may hang when accessing a Host On-Demand HTML file. We recommend that you use the default configuration, which is for the Java Console not to start automatically. This is configured by an option on the Basic tab of the Java Control Panel. The Java Console can still be opened later, if needed, after the Host On-Demand applet starts.
You may see the following message after performing a 5250 session file transfer:
Netscape security model is no longer supported.
Please migrate to the Java 2 security model instead.
You will see these messages only if your browser is running Java 2 JVM. These messages are only warnings and do not affect Host On-Demand functionality.
Users wishing to use Netscape 6.x must have the Java 2 plug-in installed and enabled in order to load the Host On-Demand clients. If you choose a full Netscape 6.x installation, this plug-in is included as part of the installation. Alternatively, if you select a custom installation, then select Sun Java 2 under Additional Components.
Clients running 32-bit Windows platforms who have installed Netscape 6 without Java support can download and install a plug-in that provides Java 2 support from the HODMain.html page.
On some Windows machines that use the Sun 1.4 plug-in and that use either Windows Terminal Server or have a low display resolution, a NullPointerException is thrown by the class file WVolatileImage, which can be seen in the Java Console. When this happens, the user is not presented with their configured sessions. You can avoid this by setting a higher display resolution or by using the IBM 1.4 plug-in. If the HTML page has been created for the configuration server-based model, you can avoid this by adding the parameter <PARAM NAME=Bookmarking VALUE=false>.