What is JMS?

[Joshua]

What exactly is th eincentive to use JMS? That is, I'm not quite sure
I understand the scope of the API -- what's it do that, say, email
doesnt? Where is it more appropriate than anything else? What is
'anything else'?

Sorry to be so vague, but I'm looking to understand what exactly I
don't understand...

Thanks in advance,

Joshua

 

[Marek Lange]

What exactly is th eincentive to use JMS? That is, I'm not quite sure
I understand the scope of the API -- what's it do that, say, email
doesnt? Where is it more appropriate than anything else? What is
'anything else'?

Sorry to be so vague, but I'm looking to understand what exactly I
don't understand...

JMS is used in J2EE environments to let components communicate
asynchronously with each other. This is achieved by putting a JMS
provider between the sender and the receiver of a message. Due to the
provider, both sender and receiver do not need to know of each other and
there is no dependency between them. The sender can fire his message to
the provider and continue doing other work. The receiver can then fetch
the message from the provider (by reading from a queue or a topic) and
execute business logic afterwards.

Hope that helps for the moment,

-marek