Inspectopedia 2025.2 Help

Serializable class without 'readObject()' and 'writeObject()'

Reports Serializable classes that do not implement readObject() and writeObject() methods.

If readObject() and writeObject() methods are not implemented, the default serialization algorithms are used, which may be sub-optimal for performance and compatibility in many environments.

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.

-serial
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 classes without non-static fields.

  • Whether to ignore Serializable anonymous classes.

Inspection options

Here you can find the description of settings available for the Serializable class without 'readObject()' and 'writeObject()' inspection, and the reference of their default values.

Ignore subclasses of

Default value:

[java.io.Externalizable, java.awt.Component]
Ignore classes that do not define instance fields

Default value:

Not selected
Ignore anonymous classes

Default value:

Not selected

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection -serial

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025