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Method call in loop condition

Reports method calls in the condition part of a loop statement. In highly resource constrained environments, such calls may have adverse performance implications.

Applying the results of this inspection without consideration might have negative effects on code clarity and design. This inspection is intended for Java ME and other highly resource constrained environments.

Example:

String s = "example"; for (int i = 0; i < s.length(); i++) { System.out.println(s.charAt(i)); }

After the quick-fix is applied:

String s = "example"; int length = s.length(); for (int i = 0; i < length; i++) { System.out.println(s.charAt(i)); }

Use the option to ignore calls to common Java iteration methods like Iterator.hasNext() and known methods with side-effects like Atomic*.compareAndSet.

Inspection options

Here you can find the description of settings available for the Method call in loop condition inspection, and the reference of their default values.

Ignore known methods with side-effects

Default: Selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.16690

Last modified: 29 April 2024