PowerDesigner (7) – Object-oriented model (with example, sequence diagram, class diagram, generating Java source code and Java source code generation class)

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The object-oriented model is a model that uses UML (Unified Modeling Language) graphics to describe the system stru

Day24_2014 days of the 24th day – object-oriented three major features, duck types, class constraints, depth analysis of Super

day24 Three Object-Oriented Features Inheritance, encapsulation, polymorphism Encapsulation: Put a bunch of things (code, data) in one place (space), and you can use it

class Student: def __