Utility class is not 'final'

Reports utility classes that aren't final or abstract.

Utility classes have all fields and methods declared as static. Making them final prevents them from being accidentally subclassed.

Example:

  public class UtilityClass {
    public static void foo() {}
  }

After the quick-fix is applied:

  public final class UtilityClass {
    public static void foo() {}
  }

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.

NonFinalUtilityClass

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, 243.26483

01 April 2025