Field may be 'final'

Reports fields that can be safely made final. All final fields have a value and this value does not change, which can make the code easier to reason about.

To avoid too expensive analysis, this inspection only reports if the field has a private modifier or it is defined in a local or anonymous class. A field can be final if:

It is static and initialized once in its declaration or in one static initializer.
It is non-static and initialized once in its declaration, in one instance initializer or in every constructor

And it is not modified anywhere else.

Example:

public class Person {
  private String name; // can be final

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

  public String getName() {
    return name;
  }
}

After the quick-fix is applied:

public class Person {
  private final String name;

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

  public String getName() {
    return name;
  }
}

Use the "Annotations" button to modify the list of annotations that assume implicit field write.

Inspection options

Option	Type	Default
	Custom	None

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Java, 233.SNAPSHOT

Last modified: 13 July 2023