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Inner class of interface

Reports inner classes in interface classes.

Some coding standards discourage the use of such classes. The inspection doesn't report enum classes and annotation interfaces.

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Class structure

Use the Ignore inner interfaces of interfaces option to ignore inner interfaces. For example:

interface I { interface Inner { } }

Inspection options

Here you can find the description of settings available for the Inner class of interface inspection, and the reference of their default values.

Ignore inner interfaces of interfaces

Not selected


By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Java, 241.18072

Last modified: 18 June 2024