Array comparison using '==', instead of 'Arrays.equals()'

Reports operators == and != used to test for array equality. In most cases, testing for the equality of array contents is intended, which can be done with the java.util.Arrays.equals() method.

A quick-fix is suggested to replace == with java.util.Arrays.equals().

Example:

  void foo(Object[] x, Object[] y) {
    boolean comparison = x == y;
  }

After the quick-fix is applied:

  void foo(Object[] x, Object[] y) {
    boolean comparison = Arrays.equals(x, y);
  }

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.

ArrayEquality

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

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 ArrayEquality

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