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Redundant local variable

Reports unnecessary local variables that add nothing to the comprehensibility of a method, including:

  • Local variables that are immediately returned.

  • Local variables that are immediately assigned to another variable and then not used.

  • Local variables that always have the same value as another local variable or parameter.

Example:

boolean yes() { boolean b = true; return b; }
boolean yes() { return true; }

Configure the inspection:

  • Use the Ignore immediately returned or thrown variables option to ignore immediately returned or thrown variables. Some coding styles suggest using such variables for clarity and ease of debugging.

  • Use the Ignore variables which have an annotation option to ignore annotated variables.

Inspection options

Here you can find the description of settings available for the Redundant local variable inspection, and the reference of their default values.

Ignore immediately returned or thrown variables

Not selected

Ignore variables which have an annotation

Default: Selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.14841

Last modified: 12 March 2024