How to build project-wide UML diagram in IntelliJ

Question

Trying to reverse-engineer existing project and it would be of great help to see how classes collaborate/depend on each other. Is there a way to build project-wide UML diagram (or class diagram of any kind) in IntelliJ IDEA using build-in functionallity or using some free plugin?

Answer 1

Right click on your package no matter which. Click Diagrams > Show Diagram (Ctrl+Alt+Shift+U). You will see your package in diagram editor.

Now:

• You can expand (E) or collapse (C) all nodes.
• You can show dependencies
• You can show many attributes of nodes (constructors, methods, properties...)
• You can drag&drop other packages from project explorer.

So, play with it a bit and i think you will achieve what you need.

This is how it could looks like: