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Antwort
Generally,
Hashmap is used to store the data and it is represented by an object. The main advantage compare with other lists is to give a unique name to each identity to each object.
There are different notations but all are same by means:
Hasmap(KEY,VALUE)
Hashmap(key,value)
Hashmap(K,V)
There are more than 15+ class methods used in hashmap: You can check out here
https://javatutoring.com/java-hashmap-guide/
The above guide will help you out :)
Reg
Mk