Unnecessary 'null' check before method call

Reports null checks followed by a method call that will definitely return false when null is passed (e.g. Class.isInstance).

Such a check seems excessive as the method call will always return false in this case.

Example:

if (x != null && myClass.isInstance(x)) { ... }

After the quick-fix is applied:

if (myClass.isInstance(x)) { ... }

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.

PointlessNullCheck

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 | Control flow issues

Last modified: 18 June 2024