'while' loop can be replaced with enhanced 'for' loop

Last modified: 03 December 2024

Reports while loops that iterate over collections and can be replaced with enhanced for loops (foreach iteration syntax).

Example:

Iterator it = c.iterator();
while(it.hasNext()) {
  Object obj = it.next();
  System.out.println(obj);
}

Can be replaced with:

for (Object obj : c) {
  System.out.println(obj);
}

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.

WhileLoopReplaceableByForEach
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 | Java language level migration aids | Java 5

This inspection depends on the Java feature 'For-each loops', which is available since Java 5.

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126