Instance field may not be initialized

Last modified: 03 December 2024

Reports instance variables that may be uninitialized upon object initialization.

Example:

class Foo {
  public int bar;

  static { }
}

Note that this inspection uses a very conservative dataflow algorithm and may incorrectly report instance variables as uninitialized. Variables reported as initialized will always be initialized.

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.

InstanceVariableMayNotBeInitialized
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 | Initialization

Use the Ignore primitive fields option to ignore uninitialized primitive fields.

Inspection options

Here you can find the description of settings available for the Instance field may not be initialized inspection, and the reference of their default values.

Ignore primitive fields

Not selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126