LinkedHashMap in Java

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LinkedHashMap in Java

LinkedHashMap class are Implementer class of Map Interface which contains values based on the key. It implements the Map interface and extends HashMap class.


Points to Remember

  • LinkedHashMap contains only unique elements.
  • LinkedHashMap have one null key or can have multiple null values.
  • It is same as HashMap instead maintains insertion order.

Example of LinkedHashMap

import java.util.*;
class LinkedHashMapDemo
public static void main(String args[])
  LinkedHashMap<Integer,String> tm=new LinkedHashMap<Integer,String>();  
 for(Map.Entry m:lhm.entrySet())
   System.out.println(m.getKey()+" "+m.getValue());  


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