'AtomicFieldUpdater' field not declared 'static final'

Reports fields of types:

java.util.concurrent.atomic.AtomicLongFieldUpdater
java.util.concurrent.atomic.AtomicIntegerFieldUpdater
java.util.concurrent.atomic.AtomicReferenceFieldUpdater

that are not static final. Because only one atomic field updater is needed for updating a volatile field in all instances of a class, it can almost always be static.

Making the updater final allows the JVM to optimize access for improved performance.

Example:

  class Main {
    private volatile int id;
    private AtomicIntegerFieldUpdater<Main> idFieldUpdater = AtomicIntegerFieldUpdater.newUpdater(Main.class, "id");
  }

After the quick-fix is applied:

  class Main {
    private volatile int id;
    private static final AtomicIntegerFieldUpdater<Main> idFieldUpdater = AtomicIntegerFieldUpdater.newUpdater(Main.class, "id");
  }

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.

AtomicFieldUpdaterNotStaticFinal

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 | Threading issues

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