As of 2019, I found a 2007 book [[ ajax on java: The Essentials of XMLHttpRequest and XML Programming with Java ]]. Some basic observations:
- ajax works with tomcat servlet engine
- ajax works with JSF and GWT but not so popular nowadays.
There’s also a 2006 book [[Practical Ajax Projects with Java Technology]], so I guess java+ajax integration was most prominent in 2007 !java