<s>
Object-Z	B-Application
is	O
an	O
object-oriented	B-Language
extension	O
to	O
the	O
Z	B-Language
notation	I-Language
developed	O
at	O
the	O
University	O
of	O
Queensland	O
,	O
Australia	O
.	O
</s>
<s>
Object-Z	B-Application
extends	O
Z	B-Language
by	O
the	O
addition	O
of	O
language	B-Language
constructs	I-Language
resembling	O
the	O
object-oriented	B-Language
paradigm	O
,	O
most	O
notably	O
,	O
classes	O
.	O
</s>
<s>
Other	O
object-oriented	B-Language
notions	O
such	O
as	O
polymorphism	B-Application
and	O
inheritance	B-Language
are	O
also	O
supported	O
.	O
</s>
<s>
While	O
not	O
as	O
popular	O
as	O
its	O
base	O
language	O
Z	B-Language
,	O
Object-Z	B-Application
has	O
still	O
received	O
significant	O
attention	O
in	O
the	O
formal	B-Architecture
methods	I-Architecture
community	O
,	O
and	O
research	O
on	O
aspects	O
of	O
the	O
language	O
are	O
ongoing	O
,	O
including	O
hybrid	O
languages	O
using	O
Object-Z	B-Application
,	O
tool	O
support	O
(	O
e.g.	O
,	O
through	O
the	O
Community	B-Language
Z	I-Language
Tools	I-Language
project	O
)	O
and	O
refinement	B-Application
calculi	I-Application
.	O
</s>
