Dusk vs Dawn. Dusk and dawn are actually opposite times of the day. The former refers to the time before night starts while the latter refers to the time just before the night ends. There is no specific time for them, however, as sunrise and sunset occurs differently everyday. Dusk.
What is JMS? Java Message Service (JMS) is an application program interface (API) from Sun Microsystems that supports the messaging communication between computers / applications / software components in a network.
JNDI and JMS are completly two differents things and I'm sure there are dosen of pages outthere which explain in details theire nature. JMS is a standard Java API to develop message based communication between hetrerognous systems using message (could be a plain string or Java object). Two features characterize JMS: Reliablity of delivering the messages between endpoints.