Inspectopedia Help

'hashCode()' called on array

Reports incorrect hash code calculation for arrays.

In order to correctly calculate the hash code for an array, use:

  • Arrays.hashcode() for linear arrays

  • Arrays.deepHashcode() for multidimensional arrays

These methods should also be used with Objects.hash() when the sequence of input values includes arrays, for example: Objects.hash(string, Arrays.hashcode(array))

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

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 | Probable bugs


By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Java, 241.18072

Last modified: 18 June 2024