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So ....guess I wrongly interpreted the statement:

The chief financial officer of the company relies on cloudy applications that require Java-in-the-web-browser.

Not necessarily.

Java applets can be launched from the browser, and appear within the browser window. But the Java runtime environment (JRE) is executing complied Java bytecode downloaded from a server.

These days, "cloudy" applications are more likely to be using Javascript in the browser (which is a different language, downloaded by the browser and interpreted by the Javascript engine within the browser) and Java on the servers, using Java 2 Enterprise Edition (J2EE).

You can uninstall the Java runtime environment (JRE) and Javascript will still execute within the browser, assuming Javascript is enabled.

Likewise, you can disable Javascript in the browser, and Java applets and applications will still execute, assuming you have the JRE installed.

Java applets running in the browser never really took off. Most applications, such as a financial application that a "CFO" would use, would use Java on the *servers*, but that doesn't require Java in the browser.

For example, my company uses Oracle ERP (accounting) software. It uses Java on the application servers, but there is no requirement for Java on the users' PC's. But it does require Javascript to be enabled in the browser.

Javascript is now technically known as "ECMAScript", and that is a better name for it, to show how utterly different it is from "Java".

Java is to Javascript as Car is to Carpet... The only thing in common is the first few letters of the name.

Here is another explanation.