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.

Example:

  class A {
    class Main implements Serializable {
    }
  }

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.

SerializableInnerClassWithNonSerializableOuterClass

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: [java.awt.Component]
Ignore anonymous classes: Not selected

Availability

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