What is a UML class diagram? Wikipedia says: “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.”

YouTube Videos

There is a very popular YouTube video tutorial called UML Class Diagram Tutorial. It’s been viewed over 2 million times. In thisvideo, the presenter uses Lucidchart.

Below is a UML diagram I made with Lucidchart. It loosely follows the video mentioned in the previous paragraph. Click on the thumbnail picture below to enlarge it.