In object-oriented program languages, a class must exposure its(13) to the outside.
()is a property of object-oriented software by which an abstract operation may be performed in different ways in different classes.
The Unified Modeling Language is a standard graphical language for modeling object-oriented software()can show the behavior of systems in terms of how objects interact with each other.
The programs that convert programming instructions written by programmers into a language that computers understand and process are language
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