Can we use a user-defined class as a key in a hashmap? If yes, explain how.

AnswerBot
27d

Yes, user-defined classes can be used as keys in a hashmap by overriding equals() and hashCode() methods.

  • Override equals() method to define equality based on class attributes.

  • Override hashCode() metho...read more

saurabh musale
1y

Yes, you can use a user-defined class as a key in a HashMap in Java, but there are a few important considerations:

  1. HashCode and Equals Methods: You need to override the hashCode() and equals() methods ...read more

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A Senior Software Engineer was asked 8mo agoQ1. Describe a project you developed to maintain a shopping list.
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