posted 18 years ago
When JSP was first introduced, room was left for implementations that use languages other than Java. This is why we have the language attribute in the page directive. At the time, Microsoft's ASP gave the developer the ability to write their server side code in either VBScript or Javascript. I'm guessing this is where the idea originated.
To the best of my knowledge, nobody has ever implemented a JSP compiler that accepts anything but Java.