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  4. Boolean variable is always inverted

Boolean variable is always inverted

Last modified: 03 December 2024

Reports boolean variables or fields which are always negated when their value is used.

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.

BooleanVariableAlwaysNegated
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 | Data flow

Example:

void m() {
  boolean b = true; //boolean variable 'b' is always inverted
  System.out.println(!b);
}

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126