Collection literals can be used

Reports calls to collection factory functions that can be replaced with collection literal syntax.

When the -Xcollection-literals compiler flag is enabled, collection creation functions such as listOf(), setOf(), arrayOf(), and similar functions can be expressed using the more concise collection literal syntax [...].

Example:

val list = listOf("a", "b", "c")

val list: List<String> = ["a", "b", "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.

ConvertToCollectionLiterals

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 | Style issues

This inspection requires the -Xcollection-literals compiler flag to be enabled.

Inspection ID: ConvertToCollectionLiterals

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 ConvertToCollectionLiterals

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

IntelliJ IDEA 2026.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2026.2, Qodana for JVM 2026.2,

Last modified: 30 June 2026