Reference to empty collection field can be replaced with method call
Reports usages of java.util.Collections fields: EMPTY_LIST, EMPTY_MAP or EMPTY_SET. These field usages may be replaced with the following method calls: emptyList(), emptyMap(), or emptySet(). Such method calls prevent unchecked warnings by the compiler because the type parameters can be inferred.
Example:
List<Integer> emptyList = Collections.EMPTY_LIST;
After the quick-fix is applied:
List<Integer> emptyList = Collections.emptyList();
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.
CollectionsFieldAccessReplaceableByMethodCall- 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.
This inspection only reports if the language level of the project or module is 5 or higher.
Availability
- By default bundled with
- Can be installed with plugin
Java, 241.18072
Last modified: 18 June 2024