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Bulk operation can be used instead of iteration

Reports single operations inside loops that could be replaced with a bulk method.

Not only are bulk methods shorter, but in some cases they may be more performant as well.

Example:

void test(Collection<Integer> numbers) { List<Integer> result = new ArrayList<>(); for (Integer i : numbers) { result.add(i); } }

After the fix is applied:

void test(Collection<Integer> numbers) { List<Integer> result = new ArrayList<>(); result.addAll(numbers); }

The Use Arrays.asList() to wrap arrays option allows to report arrays, even if the bulk method requires a collection. In this case the quick-fix will automatically wrap the array in Arrays.asList() call.

New in 2017.1

Inspection options

Here you can find the description of settings available for the Bulk operation can be used instead of iteration inspection, and the reference of their default values.

Use 'Arrays.asList()' to wrap arrays

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