Enum 'switch' statement that misses case

Last modified: 03 December 2024

Reports switch statements over enumerated types that are not exhaustive.

Example:

enum AlphaBetaGamma {
  A, B, C;

  void x(AlphaBetaGamma e) {
    switch (e) {

    }
  }
}

After the quick-fix is applied:

enum AlphaBetaGamma {
  A, B, C;

  void x(AlphaBetaGamma e) {
    switch (e) {
      case A -> {}
      case B -> {}
      case C -> {}
    }
  }
}

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.

EnumSwitchStatementWhichMissesCases
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 | Control flow issues

Use the Ignore switch statements with a default branch option to ignore switch statements that have a default branch.

This inspection depends on the Java feature 'Enums', which is available since Java 5.

Inspection options

Here you can find the description of settings available for the Enum 'switch' statement that misses case inspection, and the reference of their default values.

Ignore switch statements with a default branch

Default: Selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126