Inspectopedia 2025.2 Help

Interface which has no concrete subclass

Reports interfaces that have no concrete subclasses.

Locating this inspection

By ID

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

InterfaceNeverImplemented
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 | Inheritance issues

Configure the inspection:

  • Use the list below to add annotations. Interfaces declared with one of these annotations will be ignored by the inspection.

  • Use the checkbox below to ignore interfaces that only declare constant fields. Such interfaces may still be usable even without implementations.

Inspection options

Here you can find the description of settings available for the Interface which has no concrete subclass inspection, and the reference of their default values.

Ignore if annotated by

Default value:

Empty
Ignore interfaces which only declare constants

Default value:

Not selected

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection InterfaceNeverImplemented

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025