Check if a particular key exists in LinkedHashMap - Java Collection Framework

Java examples for Collection Framework:LinkedHashMap

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Description

Check if a particular key exists in LinkedHashMap

Demo Code

 
import java.util.LinkedHashMap;
 
public class Main {
 
  public static void main(String[] args) {
    LinkedHashMap lHashMap = new LinkedHashMap();
   /* w  ww  .  j  a  v  a2  s .c o m*/
    lHashMap.put("1","One");
    lHashMap.put("2","Two");
    lHashMap.put("3","Three");
   
    boolean blnExists = lHashMap.containsKey("3");
    System.out.println("3 exists in LinkedHashMap ? : " + blnExists);
  }
}

Result


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