What are maps in Java collections?
An example of an AI chatbot conversation about Java collections and maps.
Can you explain what maps are in Java collections?
Sure! In Java, a map is a collection that maps keys to values, allowing you to store data in key-value pairs.
What are some common implementations of maps in Java?
The most common implementations are HashMap, TreeMap, and LinkedHashMap, each with different performance characteristics.
How do I iterate over a map in Java?
You can iterate over a map using a for-each loop with the entrySet(), keySet(), or values() methods.
What is the difference between HashMap and TreeMap?
HashMap is unordered and allows null keys, while TreeMap is ordered and does not allow null keys.
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