Explicit array filling

Reports loops that can be replaced with Arrays.setAll() or Arrays.fill() calls.

This inspection suggests replacing loops with Arrays.setAll() if the language level of the project or module is 8 or higher. Replacing loops with Arrays.fill() is possible with any language level.

Example:

  for (int i=0; i<array.length; i++) {
     array[i] = calc(i);
  }

After the quick-fix is applied:

Arrays.setAll(array, this::calc);

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.

ExplicitArrayFilling

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 | Verbose or redundant code constructs

New in 2017.1

Inspection options

Here you can find the description of settings available for the Explicit array filling inspection, and the reference of their default values.

Suggest 'Arrays.setAll()': Default value:
Not selected

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 ExplicitArrayFilling

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