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Synchronization on a non-final field

Reports synchronized statement lock expressions that consist of a non-final field reference. Such statements are unlikely to have useful semantics, as different threads may acquire different locks even when operating on the same object.

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

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


private Object o; public void foo() { synchronized (o) // synchronization on a non-final field { } }


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