Have you used the Map data structure in Java development?

Yes, the Map data structure in Java is widely used for storing key-value pairs. For example, HashMap allows quick retrieval of values by key. This is convenient when you need to organize fast searches or group data.

Example of using HashMap:

import java.util.HashMap;
import java.util.Map;

public class Example {
    public static void main(String[] args) {
        Map<String, Integer> map = new HashMap<>();
        map.put("apple", 3);
        map.put("banana", 5);

        System.out.println("Number of apples: " + map.get("apple"));
    }
}