'notify()' or 'notifyAll()' without corresponding state change

Reports Object.notify() or Object.notifyAll() being called without any detectable state change occurring.

Normally, Object.notify() and Object.notifyAll() are used to inform other threads that a state change has occurred. That state change should occur in a synchronized context that contains the Object.notify() or Object.notifyAll() call, and prior to the call. While not having such a state change isn't necessarily incorrect, it is certainly worth examining.

Example:

  synchronized (this) {
    notify();
  }
  // no state change
  synchronized (this) {
    notify(); // this notify might be redundant
  }

Locating this inspection

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NakedNotify

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