The number of times this HashMap has been structurally modified
Structural modifications are those that change the number of mappings in
the HashMap or otherwise modify its internal structure (e.g.,
rehash). This field is used to make iterators on Collection-views of
the HashMap fail-fast. (See ConcurrentModificationException).
The number of times this HashMap has been structurally modified Structural modifications are those that change the number of mappings in the HashMap or otherwise modify its internal structure (e.g., rehash). This field is used to make iterators on Collection-views of the HashMap fail-fast. (See ConcurrentModificationException).