Non-final field of 'Exception' class

Reports fields in subclasses of java.lang.Exception that are not declared final.

Data on exception objects should not be modified because this may result in losing the error context for later debugging and logging.

Example:

  public class EditorException extends Exception {
    private String message; // warning: Non-final field 'message' of exception class
  }

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.

NonFinalFieldOfException

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 | Error handling

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 NonFinalFieldOfException

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

IntelliJ IDEA 2025.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025