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map.getkey in java

YOU.com answered on June 7, 2022 Popularity 8/10 Helpfulness 3/10

answer map.getkey in java

related java map get key from value

map.getkey in java

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

public class Main {
    public static void main(String[] args) {
        // Creating a HashMap
        Map<String, Integer> map = new HashMap<>();
        
        // Adding some key-value pairs to the map
        map.put("apple", 10);
        map.put("banana", 5);
        map.put("orange", 8);
        
        String key = "banana";
        
        // Checking if the key exists in the map
        if (map.containsKey(key)) {
            System.out.println("The key '" + key + "' exists in the map.");
        } else {
            System.out.println("The key '" + key + "' doesn't exist in the map.");
        }
    }
}

Popularity 8/10 Helpfulness 3/10 Language java

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

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java map get key from value

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import java.util.HashMap;
import java.util.Map;
 
class Main
{
    public static <K, V> K getKey(Map<K, V> map, V value)
    {
        return map.entrySet().stream()
                .filter(entry -> value.equals(entry.getValue()))
                .findFirst().map(Map.Entry::getKey)
                .orElse(null);
    }
 
    public static void main(String[] args)
    {
        Map<String, Integer> hashMap = new HashMap();
        hashMap.put("A", 1);
        hashMap.put("B", 2);
        hashMap.put("C", 3);
 
        System.out.println(getKey(hashMap, 2));        // prints `B`
    }
}

Popularity 10/10 Helpfulness 4/10 Language java

Source: www.techiedelight.com

Tags: get

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Contributed on Jun 07 2022

abdullah

0 Answers Avg Quality 2/10

map.getkey in java

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java map get key from value

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