Inspectopedia 2025.2 Help

Synchronization on 'this'

Reports synchronization which uses this as its lock expression.

Constructs reported include synchronized blocks which lock this, and calls to wait() notify() or notifyAll() which target wait(). Such constructs, like synchronized methods, make it hard to track just who is locking on a given object, and make possible "denial of service" attacks on objects. As an alternative, consider locking on a private instance variable, access to which can be completely controlled.

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.

GroovySynchronizationOnThis
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 | Groovy | Threading issues

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection GroovySynchronizationOnThis

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025