Class is closed to inheritance

Last modified: 03 December 2024

Reports classes that are declared final. Final classes that extend a sealed class or interface are not reported. Such classes can't be inherited and may indicate a lack of object-oriented design. Some coding standards discourage final classes.

Example:

public final class Main {
}

After the quick-fix is applied:

public class Main {
}

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.

FinalClass
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

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126