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'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.


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"); }

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IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Java, 241.18072

Last modified: 18 June 2024