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Redundant 'Collection' operation

Reports unnecessarily complex collection operations which have simpler alternatives.

Example:

void f(String[] array, Collection<String> collection) { String[] strings = Arrays.asList(array).subList(0, 10).toArray(new String[0]); boolean contains = collection.containsAll(Collections.singletonList("x")); }

After the quick-fix is applied:

void f(String[] array, Collection<String> collection) { String[] strings = Arrays.copyOf(array, 10); boolean contains = collection.contains("x"); }

New in 2018.1

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