How are class representations created in UML?

[rictor]

In UML (Unified Modeling Language) , how is class represented pictorially?

 

[BvU]

Usually as a rectangle

 

[jedishrfu]

Inside the rect may be several dividers with info about parent classes, attributes and callable methods.

https://www.smartdraw.com/uml-diagram/

there's a couple of free tools that can help you create the various UML diagrams. One such tool is:

http://www.umlet.com/

My favorite are the sequence diagrams