Declaration can have 'final' modifier

Reports fields, methods, or classes that may have the final modifier added to their declarations.

Final classes can't be extended, final methods can't be overridden, and final fields can't be reassigned.

Example:

  public class Person {
    private String name;

    Person(String name) {
      this.name = name;
    }

    public String getName() {
      return name;
    }

    public String toString() {
      return getName();
    }
  }

After the quick-fix is applied:

  public final class Person {
    private final String name;

    Person(String name) {
      this.name = name;
    }

    public final String getName() {
      return name;
    }

    public final String toString() {
      return getName();
    }
  }

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.

CanBeFinal

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

Use the Report classes and Report methods options to define which declarations are to be reported.

Inspection ID: CanBeFinal

Inspection options

Here you can find the description of settings available for the Declaration can have 'final' modifier inspection, and the reference of their default values.

Report classes

Option ID:

REPORT_CLASSES

Default value:

Not selected

Report methods

Option ID:

REPORT_METHODS

Default value:

Not selected

Report fields

Option ID:

REPORT_FIELDS

Default value:

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 CanBeFinal

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

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025