Inspectopedia Help

Overwritten Map, Set, or array element

Reports code that overwrites a Map key, a Set element, or an array element in a sequence of add/put calls or using a Java 9 factory method like Set.of (which will result in runtime exception).

This usually occurs due to a copy-paste error.


map.put("A", 1); map.put("B", 2); map.put("C", 3); map.put("D", 4); map.put("A", 5); // duplicating key "A", overwrites the previously written entry

New in 2017.3

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3


Java, 233.SNAPSHOT

Last modified: 13 July 2023