If you see a screen similar to this when accessing BCeSIS and you already have Java installed.

To verify the issue - Go To Tools -> Add-ons

On the Plugins page note that the Java Platform has been disabled

To resolve the issue enter   about:config   in the address bar

Click the "I'll be careful, I promise" button to continue

In the search box type in blocklist

Change the extension.blocklist.enabled from true to false by double clicking it

Restart Firefox