What is a HashMap in Java?
An example of an AI chatbot conversation about HashMap in Java and its functionalities.
Can you explain what a HashMap is in Java?
Sure! A HashMap in Java is a part of the Java Collections Framework and stores data in key-value pairs.
How does it handle collisions?
HashMap uses a technique called chaining to handle collisions, where multiple keys can map to the same hash index.
What are the advantages of using HashMap?
Some advantages include fast retrieval times, dynamic resizing, and the ability to store null values.
Can you give me an example of how to use HashMap?
Certainly! Here's a simple example: HashMap<String, Integer> map = new HashMap<>(); map.put("apple", 1);.
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