<s>
The	O
Jakarta	B-Language
Messaging	I-Language
API	B-Application
(	O
formerly	O
Java	B-Language
Message	I-Language
Service	I-Language
or	O
JMS	O
API	B-Application
)	O
is	O
a	O
Java	B-Language
application	B-Application
programming	I-Application
interface	I-Application
(	O
API	B-Application
)	O
for	O
message-oriented	B-Application
middleware	I-Application
.	O
</s>
<s>
Jakarta	B-Language
Messaging	I-Language
is	O
a	O
part	O
of	O
Jakarta	B-Language
EE	I-Language
and	O
was	O
originally	O
defined	O
by	O
a	O
specification	O
developed	O
at	O
Sun	O
Microsystems	O
before	O
being	O
guided	O
by	O
the	O
Java	B-Language
Community	I-Language
Process	I-Language
.	O
</s>
<s>
Message-oriented	O
technologies	O
attempt	O
to	O
relax	O
tightly	O
coupled	O
communication	O
(	O
such	O
as	O
TCP	B-Protocol
network	O
sockets	O
,	O
CORBA	B-Architecture
or	O
RMI	B-Language
)	O
by	O
the	O
introduction	O
of	O
an	O
intermediary	O
component	O
.	O
</s>
<s>
JMS	O
2.0	O
is	O
currently	O
maintained	O
under	O
the	O
Java	B-Language
Community	I-Language
Process	I-Language
as	O
JSR	B-Language
343	O
.	O
</s>
<s>
JMS	O
3.0	O
is	O
under	O
early	O
development	O
as	O
part	O
of	O
Jakarta	B-Language
EE	I-Language
.	O
</s>
<s>
An	O
implementation	O
of	O
the	O
JMS	O
interface	O
for	O
message-oriented	B-Application
middleware	I-Application
(	O
MOM	O
)	O
.	O
</s>
<s>
Providers	O
are	O
implemented	O
as	O
either	O
a	O
Java	B-Language
JMS	O
implementation	O
or	O
an	O
adapter	O
to	O
a	O
non-Java	O
MOM	O
.	O
</s>
<s>
The	O
JMS	O
API	B-Application
supports	O
two	O
distinct	O
models	O
:	O
</s>
<s>
This	O
messaging	O
type	O
is	O
built	O
on	O
the	O
concept	O
of	O
message	B-Operating_System
queues	I-Operating_System
,	O
senders	O
,	O
and	O
receivers	O
.	O
</s>
<s>
The	O
publish-and-subscribe	B-Operating_System
model	O
supports	O
publishing	O
messages	O
to	O
a	O
particular	O
message	O
"	O
topic	O
"	O
.	O
</s>
<s>
JMS	O
provides	O
a	O
way	O
of	O
separating	O
the	O
application	O
from	O
the	O
transport	B-Architecture
layer	I-Architecture
of	O
providing	O
data	O
.	O
</s>
<s>
The	O
same	O
Java	B-Language
classes	O
can	O
be	O
used	O
to	O
communicate	O
with	O
different	O
JMS	O
providers	O
by	O
using	O
the	O
Java	B-Language
Naming	I-Language
and	I-Language
Directory	I-Language
Interface	I-Language
(	O
JNDI	B-Language
)	O
information	O
for	O
the	O
desired	O
provider	O
.	O
</s>
<s>
RFC	O
6167	O
defines	O
a	O
jms	O
:	O
URI	O
scheme	O
for	O
the	O
Java	B-Language
Message	I-Language
Service	I-Language
.	O
</s>
<s>
Starting	O
from	O
Java	B-Language
EE	I-Language
version	O
1.4	O
,	O
a	O
JMS	O
provider	O
has	O
to	O
be	O
contained	O
in	O
all	O
Java	B-Language
EE	I-Language
application	O
servers	O
.	O
</s>
<s>
This	O
can	O
be	O
implemented	O
using	O
the	O
message	O
inflow	O
management	O
of	O
the	O
Java	B-Language
EE	I-Language
Connector	I-Language
Architecture	I-Language
,	O
which	O
was	O
first	O
made	O
available	O
in	O
that	O
version	O
.	O
</s>
