Get Size of Java LinkedHashMap Example
- /*
- 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
- */
