'signal()' without corresponding 'await()'

Reports calls to Condition.signal() or Condition.signalAll() for which no call to a corresponding Condition.await() can be found.

Only calls that target fields of the current class are reported by this inspection.

Example:

  class Queue {
    private final Condition isEmpty = ...;

    void add(Object elem) {
      // ...
      isEmpty.signal(); // warning: Call to 'signal()' without corresponding 'await()'
      // ...
    }

    void remove(Object elem) throws InterruptedException {
      // ...
      //      isEmpty.await();
      // ...
    }
  }

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.

SignalWithoutCorrespondingAwait

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

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 SignalWithoutCorrespondingAwait

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

IntelliJ IDEA 2025.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025