IdentityHashMap hashCode() Method in Java

The hashCode() method in IdentityHashMap class in Java returns the hash code value for the specified object. The hash code value is calculated based on the memory address of the object rather than its contents.

Syntax:

public int hashCode()

Example:

IdentityHashMap<String, Integer> map = new IdentityHashMap<>();
map.put("one", 1);
map.put("two", 2);
map.put("three", 3);

int hashCode = map.hashCode();
System.out.println("Hash code of map: " + hashCode);

Output:

Hash code of map: 366712642

Note: The hashCode() method in IdentityHashMap is inherited from the Object class and is overridden to provide the hash code based on the memory address of the object.