So my question is... Is JMS gonna be replaced by other technologies anytime soon? Is JMS still something worth learning? Because if not, then I'm just gonna sell this book again... Thanks!
JMS is one of those APIs, that is *not* going to be replaced by other technologies anytime soon. However, whether it is worth learning or not, would depend on if you use any EAI products, like MQ Series, Tibco, WebMethods, BEA, etc. It is the abstraction layer to many of the most popular middleware products.