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Serializable non-'static' inner class with non-Serializable outer class

Reports non-static inner classes that implement Serializable and are declared inside a class that doesn't implement Serializable.

Such classes are unlikely to serialize correctly due to implicit references to the outer class.


class A { class Main implements Serializable { } }

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 | Serialization issues

Use the following options to configure the inspection:

  • List classes whose inheritors should not be reported by this inspection. This is meant for classes that inherit Serializable from a superclass but are not intended for serialization.

  • Whether to ignore Serializable anonymous classes.

Inspection options

Here you can find the description of settings available for the Serializable non-'static' inner class with non-Serializable outer class inspection, and the reference of their default values.

Ignore subclasses of


Ignore anonymous classes

Not 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