A collection of the posts I saw recently.
Introduction to Java threads
Java Callable Future Example
Vaadin chat example
It needs multi session (thread) support when we need to use tabs to chat back and forth. The app description is here.
The annotation to support this: @VaadinSessionScope
Java interview questions
Placeholder: I still need to clean up the list below (to incorporate my recent interview experience).
code review (what to look)
static vs. final