/*
Check if a particular key exists in Java LinkedHashMap example
This Java Example shows how to check if LinkedHashMap object contains a particular
key using containsKey method of LinkedHashMap class.
*/
import java.util.LinkedHashMap;
public class CheckKeyOfLinkedHashMapExample {
public static void main(String[] args) {
//create LinkedHashMap object
LinkedHashMap lHashMap = new LinkedHashMap();
//add key value pairs to LinkedHashMap
lHashMap.put("1","One");
lHashMap.put("2","Two");
lHashMap.put("3","Three");
/*
To check whether a particular key exists in LinkedHashMap use
boolean containsKey(Object key) method of LinkedHashMap class.
It returns true if the LinkedHashMap contains mapping for specified key
otherwise false.
*/
boolean blnExists = lHashMap.containsKey("3");
System.out.println("3 exists in LinkedHashMap ? : " + blnExists);
}
}
/*
Output would be
3 exists in LinkedHashMap ? : true
*/
