Nested assignment

Last modified: 03 December 2024

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 Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126