In this article, the Difference between HashMap and IdentityHashMap, we will discuss IdentityHashMap and difference between IdentityHashMap and HashMap. In previous articles, we have discussed very interesting topics such as How does HashMap work internally, and the difference between HashMap and TreeMap. Important points to be considered for choosing the right map implementation in the Java development. Also, discussed How does TreeMap work internally. IdentityHashMap in Java IdentityHashMap implements Map, Serializable and Clonable interfaces and extends AbstractMap class. We must avoid IdentityHashMap class for general purpose. While this class implements Map interface like other map implementation classes such as HashMap,
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