Question

I have some long-running Java code running in a thread started by a Java applet. As soon as the code has finished, it has information for the user. I’d like to pass this information to a JavaScript callback in a thread-safe way. Just using the Java DOM API to modify the HTML document is not good enough, unless my JavaScript callback gets called as a side effect in a thread safe way (i.e. eventually, in the same browser thread where JavaScript callbacks execute). How can I implement this? Are there libraries already doing it?

Answer 1

It seems that there is no public tutorial how to do it. The whole JavaScript–Java interface is underdocumented, and it is subject to browser limitations.