Inspectopedia Help

Duplicate condition

Reports duplicate conditions in && and || expressions and branches of if statements. While sometimes duplicate conditions are intended, in most cases they the result of an oversight.

Example:

boolean result = digit1 != digit2 || digit1 != digit2;

To ignore conditions that may produce side effects, use the Ignore conditions with side effects option. Disabling this option may lead to false-positives, for example, when the same method returns different values on subsequent invocations.

Example:

if (iterator.next() != null || iterator.next() != null) { System.out.println("Got it"); }

Due to possible side effects of iterator.next() (on the example), the warning will only be triggered if the Ignore conditions with side effects option is disabled.

Inspection options

Option

Type

Default

Ignore conditions with side effects

Checkbox

true

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3

Plugin:

Java, 233.SNAPSHOT

Last modified: 13 July 2023