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Collection added to itself

Reports cases where the argument of a method call on a java.util.Collection or java.util.Map is the collection or map itself. Such situations may occur as a result of copy-paste in code with raw types.

Example:

ArrayList list = new ArrayList<>(); list.add(list); // warning here return list.hashCode(); // throws StackOverflowError

Inspection Details

Available in:

IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,

Plugin:

Java, 242.SNAPSHOT

Last modified: 20 February 2024