[danny8000]

You can do some of these tricks with Excel 2016 or later and SharePoint Enterprise or Office 365 -- which many corporations already have.

You can embed an auto-updating Excel file in a SharePoint webpage using a "webpart" that renders as HTML. (Microsoft is getting away from web-rendering Excel with Silverlight,and allowing more functionality without the need for a browser plug-in.)

The trick is to setup the Excel data connection using the "Get External Data" -> "From Other Sources" -> "OData Data Feed" and not use the "Data Connections / Microsoft Query" method. Note: Microsoft Query connections won't update server side, the Excel file needs to be opened, data connections refreshed, and re-saved.

It does require a bit of Excel expertise to setup, but there is no need to create a Java application to get it to run.

[oneplane]

I'd rather have my Java expertise than Excel expertise.