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.
a java virtual machine jvm is an abstract computing machine that enables a computer to run a java program there are three notions of the jvm specification implementation and instance the specification is a document that formally describes what is required of a jvm implementation