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Map.forEach() can be used

Suggests replacing for(Entry<?,?> entry : map.entrySet()) {...} or map.entrySet().forEach(entry -> ...) with map.forEach((key, value) -> ...).

Example

void print(Map<String, Integer> map) { map.entrySet().forEach(entry -> { String str = entry.getKey(); System.out.println(str + ":" + entry.getValue()); }); }
void print(Map<String, Integer> map) { map.forEach((str, value) -> System.out.println(str + ":" + value)); }

When the Do not report loops option is enabled, only entrySet().forEach() cases will be reported. However, the quick-fix action will be available for for-loops as well.

This inspection depends on the Java feature 'Lambda methods in collections' which is available since Java 8.

New in 2017.1

Inspection options

Here you can find the description of settings available for the Map.forEach() can be used inspection, and the reference of their default values.

Do not report loops

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