Using Code Iris with Intellij to generate class diagram

Assuming you are using community edition and have installed the Plugin Iris properly, what you could do is:

Right Click on the package and select Generate Graph

You should see similar output as below:

12:24 PM Diagram created: Indexed diagram of 1 modules, 5 packages and 5 classes in 0 seconds

Click on View >> Tool Window >> Code Iris

You should see the diagrams now.

Detailed answer of using Code Iris with Intellij to generate UML diagram ————————————————————————————————

Firstly, right click on the project and select Create Graph.

Then, select the module from where you would like to create the UML graph. Afterward, hit ENTER and the graph is generated.

As the graph is created, go View -> Tool Windows -> Code Iris

You can see the graph and select the views (i.e. package view etc) for the virtualization if required.

You can save it from the dialogue box.