JAVA HashMap get keys by values

Energetic Echidna answered on August 20, 2020 Popularity 10/10 Helpfulness 5/10

answer JAVA HashMap get keys by values

related java hashmap get array of keys

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JAVA HashMap get keys by values

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    Map<String, String> map = new HashMap<String, String>();
    
    map.put("abc", "123");
    map.put("xyz", "456");
    
    for(Entry<String, String> entry : map.entrySet()) {
        if(entry.getValue().equalsIgnoreCase("456")) {
            System.out.println(entry.getKey());
        }
    }

Popularity 10/10 Helpfulness 5/10 Language java

Source: stackoverflow.com

Tags: get hashmap java

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Contributed on Sep 12 2021

Energetic Echidna

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java hashmap get array of keys

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for (int key : myHashMap.keySet()){
	// do stuff
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: get

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Contributed on Aug 20 2020

PythonBoy2020

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get key from value hashmap

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

class Main {
  public static void main(String[] args) {

    // create a hashmap
    HashMap<String, Integer> numbers = new HashMap<>();
    numbers.put("One", 1);
    numbers.put("Two", 2);
    numbers.put("Three", 3);
    System.out.println("HashMap: " + numbers);

    // value whose key is to be searched
    Integer value = 3;

    // iterate each entry of hashmap
    for(Entry<String, Integer> entry: numbers.entrySet()) {

      // if give value is equal to value from entry
      // print the corresponding key
      if(entry.getValue() == value) {
        System.out.println("The key for value " + value + " is " + entry.getKey());
        break;
      }
    }
  }
}

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Source: www.programiz.com

Tags: get

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Contributed on Mar 21 2022

Zenon Codes

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JAVA HashMap get keys by values

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JAVA HashMap get keys by values

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