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/* Get Size of Java LinkedHashMap Example This Java Example shows how to get the size or nubmer of key value pairs stored in LinkedHashMap using size method. */ import java.util.LinkedHashMap; public class GetSizeOfLinkedHashMapExample{ public static void main(String[] args) { //create LinkedHashMap object LinkedHashMap lHashMap = new LinkedHashMap(); /* To get the size of LinkedHashMap use int size() method of LinkedHashMap class. It returns the number of key value pairs stored in LinkedHashMap object. */ System.out.println("Size of LinkedHashMap : " + lHashMap.size()); //add key value pairs to LinkedHashMap using put method lHashMap.put("1","One"); lHashMap.put("2","Two"); lHashMap.put("3","Three"); System.out.println("Size of LinkedHashMap after addition : " + lHashMap.size()); //remove one element from LinkedHashMap using remove method Object obj = lHashMap.remove("2"); System.out.println("Size of LinkedHashMap after removal : " + lHashMap.size()); } } /* Output would be Size of LinkedHashMap : 0 Size of LinkedHashMap after addition : 3 Size of LinkedHashMap after removal : 2 */ |
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