Object-Z[1] is an object-oriented extension to the Z notation developed at the University of Queensland, Australia.
Object-Z extends Z by the addition of language constructs resembling the object-oriented paradigm, most notably, classes.
Other object-oriented notions such as polymorphism and inheritance are also supported.
While not as popular as its base language Z, Object-Z has still received significant attention in the formal methods community, and research on aspects of the language are ongoing, including hybrid languages using Object-Z,[2][3] tool support (e.g., through the Community Z Tools project) and refinement calculi.
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