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Unnecessary 'null' check before 'equals()' call

Reports comparisons to null that are followed by a call to equals() with a constant argument.


if (s != null && s.equals("literal")) {}

After the quick-fix is applied:

if ("literal".equals(s)) {}

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 | Code style issues

Use the inspection settings to report equals() calls with a non-constant argument when the argument to equals() is proven not to be null.

Inspection options

Here you can find the description of settings available for the Unnecessary 'null' check before 'equals()' call inspection, and the reference of their default values.

Report equals with non-constant not-null argument

Default: Selected


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