Nested assignment

Reports assignment expressions that are nested inside other expressions.

Such expressions may be confusing and violate the general design principle, which states that any construct should do precisely one thing.

Example:

  String userName;
  // Warning: result of assignment to 'userName' is used
  String message = "Hello " + (userName = "Alice") + "!"
  System.out.println(message);
  System.out.println("Goodbye " + userName);

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.

NestedAssignment

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 | Assignment issues

Inspection ID: NestedAssignment

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 NestedAssignment

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

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025