'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

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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

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024