JavaScript and Java are not related. Java beans only exist within a Java VM (on the host, since
applets are DOA), JavaScript is typically running on the client (since there's no JVM for server-side JavaScript).
However, there are mechanisms for serializing JavaBeans for JavaScript to consume - just marshall the bean out to JSON (Javascript Object Notation). JavaScript can easily consume JSON data and convert it to JavaScript equivalent data structures. Likewise, JavaScript scan write out JSON and send it to a server for a Java backend to parse into POJOs.
In fact, that's the heart of how you get data back and forth in AJAX. Although other formats also work (like
SOAP and YAML), JSON is the most JavaScript-friendly encoding mechanism, And I believe that there's currently JSON libraries built into the stock JVM. Or if not, several alternatve third-party libraries.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.