<s>
In	O
a	O
distributed	B-Architecture
computing	I-Architecture
environment	O
,	O
distributed	B-Operating_System
object	I-Operating_System
communication	I-Operating_System
realizes	O
communication	O
between	O
distributed	B-Operating_System
objects	I-Operating_System
.	O
</s>
<s>
The	O
main	O
role	O
is	O
to	O
allow	O
objects	O
to	O
access	O
data	O
and	O
invoke	O
methods	O
on	O
remote	O
objects	O
(	O
objects	O
residing	O
in	O
non-local	O
memory	B-General_Concept
space	I-General_Concept
)	O
.	O
</s>
<s>
Invoking	O
a	O
method	B-Language
on	O
a	O
remote	O
object	O
is	O
known	O
as	O
remote	B-Operating_System
method	I-Operating_System
invocation	I-Operating_System
(	O
RMI	O
)	O
or	O
remote	B-Operating_System
invocation	I-Operating_System
,	O
and	O
is	O
the	O
object-oriented	B-Language
programming	I-Language
analog	O
of	O
a	O
remote	B-Operating_System
procedure	I-Operating_System
call	I-Operating_System
(	O
RPC	O
)	O
.	O
</s>
<s>
In	O
RMI	O
,	O
a	O
stub	O
(	O
which	O
is	O
the	O
bit	O
on	O
the	O
client	O
)	O
is	O
defined	O
by	O
the	O
programmer	O
as	O
an	O
interface	B-Application
.	O
</s>
<s>
The	O
skeleton	O
is	O
defined	O
in	O
a	O
class	O
which	O
implements	B-Language
the	O
interface	B-Application
stub	O
.	O
</s>
<s>
The	O
client	O
side	O
object	O
participating	O
in	O
distributed	B-Operating_System
object	I-Operating_System
communication	I-Operating_System
is	O
known	O
as	O
a	O
stub	O
or	O
proxy	O
,	O
and	O
is	O
an	O
example	O
of	O
a	O
proxy	O
object	O
.	O
</s>
<s>
The	O
server	O
side	O
object	O
participating	O
in	O
distributed	B-Operating_System
object	I-Operating_System
communication	I-Operating_System
is	O
known	O
as	O
a	O
skeleton	O
(	O
or	O
stub	O
;	O
term	O
avoided	O
here	O
)	O
.	O
</s>
