'HashMap' can be replaced with 'EnumMap'

Reports hashMapOf function or HashMap constructor calls that can be replaced with an EnumMap constructor call.

Using EnumMap constructor makes your code simpler.

The quick-fix replaces the function call with the EnumMap constructor call.

Example:

  enum class E {
      A, B
  }

  fun getMap(): Map<E, String> = hashMapOf()

After the quick-fix is applied:

  enum class E {
      A, B
  }

  fun getMap(): Map<E, String> = EnumMap(E::class.java)

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.

ReplaceWithEnumMap

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 | Kotlin | Other problems

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 ReplaceWithEnumMap

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