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umlclass-diagram

UML Class Diagram with Inheritance and Interface

I'm trying to understand how can I draw a UML diagram of a program that extends one class and implements another interface. I've made this sketch but I'm not sure if it is correct.

A is a class that has some fields and methods and B is an interface which has some methods. And finally C is extending from A and implements B. ( like public class C extends A implements B in java)

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Solution

  • Your diagram is almost correct. The left generalization is drawn like a unfilled triangle.

    enter image description here

    Edit: In Enterprise Architect you can show the generalization also with the general class written in italics top right of the generalizing class:

    enter image description here

    Obviously this is a pure Sparxian invention as their support does not have an explanation for its origin.