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Unary plus

Reports usages of the + unary operator. The unary plus is usually a null operation, and its presence might represent a coding error. For example, in a combination with the increment operator (like in +++) or with the equal operator (like in =+).


void unaryPlus(int i) { int x = + +i; }

The following quick fixes are suggested:

  • Remove + operators before the i variable:

    void unaryPlus(int i) { int x = i; }
  • Replace + operators with the prefix increment operator:

    void unaryPlus(int i) { int x = ++i; }

Use the checkbox below to report unary pluses that are used together with a binary or another unary expression. It means the inspection will not report situations when a unary plus expression is used in array initializer expressions or as a method argument.

Inspection options




Only report in confusing binary or unary expression context



Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3


Java, 233.SNAPSHOT

Last modified: 13 July 2023