<s>
JGroups	B-Language
is	O
a	O
library	O
for	O
reliable	B-Protocol
one-to-one	O
or	O
one-to-many	O
communication	O
written	O
in	O
the	O
Java	B-Language
language	I-Language
.	O
</s>
<s>
JGroups	B-Language
enables	O
developers	O
to	O
create	O
reliable	B-Protocol
multipoint	O
(	O
multicast	O
)	O
applications	O
where	O
reliability	O
is	O
a	O
deployment	O
issue	O
.	O
</s>
<s>
JGroups	B-Language
also	O
relieves	O
the	O
application	O
developer	O
from	O
implementing	O
this	O
logic	O
themselves	O
.	O
</s>
<s>
This	O
code	O
below	O
demonstrates	O
the	O
implementation	O
of	O
a	O
simple	O
command-line	O
IRC	B-Protocol
client	O
using	O
JGroups	B-Language
:	O
</s>
<s>
For	O
example	O
,	O
in	O
a	O
local	O
network	O
,	O
IP	B-Protocol
multicasting	I-Protocol
might	O
be	O
used	O
.	O
</s>
<s>
When	O
IP	B-Protocol
multicasting	I-Protocol
is	O
disabled	O
,	O
TCP	B-Protocol
can	O
be	O
used	O
as	O
transport	O
.	O
</s>
<s>
When	O
run	O
in	O
the	O
cloud	O
,	O
TCP	B-Protocol
plus	O
a	O
cloud	O
discovery	O
protocol	O
would	O
be	O
used	O
and	O
so	O
on	O
...	O
</s>
<s>
The	O
most	O
powerful	O
feature	O
of	O
JGroups	B-Language
is	O
its	O
flexible	O
protocol	O
stack	O
,	O
which	O
allows	O
developers	O
to	O
adapt	O
it	O
to	O
exactly	O
match	O
their	O
application	O
requirements	O
and	O
network	O
characteristics	O
.	O
</s>
<s>
Reliable	B-Protocol
unicast	O
and	O
multicast	O
message	O
transmission	O
.	O
</s>
