'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");
}

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

Last modified: 13 July 2023