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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.


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

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.14841

Last modified: 12 March 2024