Class diagram
![Hierarchy of UML 2.5 Diagrams, shown as a class diagram. The individual classes are represented just with one compartment, but they often contain up to three compartments.](/Images/godic/202502/13/Uml_diagram24814.png")
![A class with three compartments.](/Images/godic/202502/13/BankAccount1.svg4814.png")
![UML relations notation](/Images/godic/202502/13/Uml_classes_en.svg4814.png")
![Class diagram showing generalization between the superclass Person and the two subclasses Student and Professor](/Images/godic/202502/13/KP-UML-Generalization-20060325.svg4815.png")
In software engineering, a class diagram in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects.