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- [Update the Value Associated With a Key in a HashMap](https://www.baeldung.com/java-hashmap-update-value-by-key)
- [Java Map keySet() vs. entrySet() vs. values() Methods](https://www.baeldung.com/java-map-entries-methods)
- [Java IdentityHashMap Class and Its Use Cases](https://www.baeldung.com/java-identityhashmap)
- [How to Invert a Map in Java](https://www.baeldung.com/java-invert-map)