/*
Get Size of Java HashSet Example
This Java Example shows how to get the size or nubmer of elements stored in
Java HashSet object using size method.
*/
import java.util.HashSet;
public class GetSizeOfJavaHashSetExample{
public static void main(String[] args) {
//create HashSet object
HashSet hSet = new HashSet();
/*
To get the size of HashSet use
int size() method of HashSet class. It returns the number of elements
stored in HashSet object.
*/
System.out.println("Size of HashSet : " + hSet.size());
//add elements to HashSet object
hSet.add(new Integer("1"));
hSet.add(new Integer("2"));
hSet.add(new Integer("3"));
System.out.println("Size of HashSet after addition : " + hSet.size());
//remove one element from HashSet using remove method
hSet.remove(new Integer("1"));
System.out.println("Size of HashSet after removal : " + hSet.size());
}
}
/*
Output would be
Size of HashSet : 0
Size of HashSet after addition : 3
Size of HashSet after removal : 2
*/
