This class diagram contains three subclasses: Duck, Fish, Horse, and one superclass: Animal. Each subclass is connected to the Animal superclass with an inheritance relationship.
Animal inheritance diagram code in Gleek
Animal
+int age
+string gender
+isMammal ()
Fish
-boolean canEat
-swim()
Horse
+boolean isWild
+run()
Duck
+string color
+swim()
Duck–*>AnimalAnimal
About class diagrams
Class diagrams are used in software engineering to describe the structure of a system. A class diagram uses Unified Modeling Language (UML) to show the classes, attributes, methods (or operations), and their relationships to each other in the system. Class diagrams prove valuable in object-oriented modeling. Class diagrams can be used to model the data structure or to design a system in detail.
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