Inspectopedia Help

Type parameter extends 'final' class

Reports type parameters declared to extend a final class.

Suggests replacing the type parameter with the type of the specified final class since final classes cannot be extended.


void foo() { List<? extends Integer> list; // Warning: the Integer class is a final class }

After the quick-fix is applied:

void foo() { List<Integer> list; }

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3


Java, 233.SNAPSHOT

Last modified: 13 July 2023