'final' method in 'final' class

Reports final methods in final classes.

Since final classes cannot be inherited, marking a method as final may be unnecessary and confusing.

Example:

record Bar(int a, int b) {
  public final int sum() { 
     return a + b;
  }
}

After the quick-fix is applied:

record Bar(int a, int b) {
  public int sum() { 
     return a + b;
  }
}

As shown in the example, a class can be marked as final explicitly or implicitly.

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.

FinalMethodInFinalClass

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 | Declaration redundancy

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,
Can be installed with plugin:	Java, 243.23126

Last modified: 03 December 2024