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can hashmap have duplicate keys

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Delta Sierra answered on August 25, 2020 Popularity 9/10 Helpfulness 1/10

answer can hashmap have duplicate keys

related No Duplicate Key on HashMap

related how to insert duplicate key in hashmap

can hashmap have duplicate keys

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HashMap does not allow duplicate keys

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Contributed on Apr 01 2023

Delta Sierra

0 Answers Avg Quality 2/10

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No Duplicate Key on HashMap

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-1

import java.util.*;  
public class hashmapeg2{  
 public static void main(String args[]){  
   HashMap<Integer,String> map=new HashMap<Integer,String>();//Creating HashMap    
   map.put(1,"Cat");  //Put elements in Map  
   map.put(2,"Dog");    
   map.put(3,"Markhor");   
   map.put(4,"Peacock");   
   map.put(1,"Leopard");
       
   System.out.println("Iterating Hashmap...");  
   for(Map.Entry m : map.entrySet()){    
    System.out.println(m.getKey()+" "+m.getValue());    
   }  
}  
}

Popularity 9/10 Helpfulness 2/10 Language java

Source: softhunt.net

Tags: hashmap

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Contributed on May 10 2022

Outrageous Ostrich

0 Answers Avg Quality 2/10

how to insert duplicate key in hashmap

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Map<String, List<String>> map = new HashMap<>();map.computeIfAbsent("key1", k -> new ArrayList<>()).add("value1");map.computeIfAbsent("key1", k -> new ArrayList<>()).add("value2"); assertThat(map.get("key1").get(0)).isEqualTo("value1");assertThat(map.get("key1").get(1)).isEqualTo("value2");

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Source: www.baeldung.com

Tags: hashmap

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Contributed on Aug 25 2020

Helpless Hedgehog

0 Answers Avg Quality 2/10

can hashmap have duplicate keys

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can hashmap have duplicate keys

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No Duplicate Key on HashMap

how to insert duplicate key in hashmap

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