Subclass field hides superclass field

Reports fields in a derived class that are named identically a field of a superclass. Java fields cannot be overridden in derived classes, so the field in the derived class will hide the field from the superclass.

As a result of such naming, you may accidentally use the field of the derived class where the identically named field of a base class is intended.

A quick-fix is suggested to rename the field in the derived class.

Example:

class Parent {
  Parent parent;
}
class Child extends Parent {
  Child parent;
}

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.

FieldHidesSuperclassField

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 | Visibility

You can configure the following options for this inspection:

Ignore non-accessible fields - indicates whether this inspection should report all name clashes, or only clashes with fields which are visible from the subclass.
Ignore static fields hiding static fields - ignore static fields which hide static fields in base classes.

Inspection options

Here you can find the description of settings available for the Subclass field hides superclass field inspection, and the reference of their default values.

Ignore non-accessible fields: Default: Selected
Ignore static fields hiding static fields: Default: 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