Master Java Servlet Inheritance with IntelliJ IDEA Diagrams

When you need to visualize the inheritance and interface implementation hierarchy of Java Servlet classes, IntelliJ IDEA’s diagram feature provides a clear, interactive view.

1. Remove unrelated classes

Delete classes you don’t care about (e.g., Object, Serializable) by selecting them in the diagram and pressing Delete, leaving only the relevant Servlet hierarchy.

2. Show class details

Right‑click a class and choose “Show Categories” (or use the toolbar) to expand properties, methods, constructors, etc. You can also filter by visibility with “Change Visibility Level”.

3. Zoom and magnify

Press Alt to activate a magnifier for a closer look at the diagram.

4. Add other classes

Right‑click and select “Add Class to Diagram”, then type the class name to include it in the current view.

5. Jump to source code

Double‑click a class, then right‑click a method and choose “Jump to Source” to open its implementation. The Structure tool window can also list all methods for quick navigation.

Using these IDEA features makes exploring class relationships and framework source code much more comfortable.