JMS supports both messaging models: point-to-point (queuing) and publish-subscribe. JMS was defined to allow Java application to use enterprise messaging systems. More importantly, it provides a common way for Java applications to access such enterprise messaging systems.

Which one is advantage of JMS?

Advantage of JMS

1) Asynchronous: To receive the message, client is not required to send request. Message will arrive automatically to the client. 2) Reliable: It provides assurance that message is delivered.

When should I use JMS vs Web services?

JMS and WS both enable distribute applications. The difference is asynchronous(JMS) vs synchronous (Web Services). Web Services can be implemented in SOAP or REST styles. JMS is a api which supports communication in two modes - point-to-point and publish-subscribe.