Java HashSet Size Example

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import java.util.HashSet;

public class JavaHashSetSizeExample {
	
	public static void main(String[] args) {
		   
	    //create HashSet object
	    HashSet hashSet = new HashSet();
	   
	    System.out.println("Size of HashSet : " + hashSet.size());
	   
	    hashSet.add(new Integer("1"));
	    hashSet.add(new Integer("2"));
	    hashSet.add(new Integer("3"));
	 
	    System.out.println("Size of HashSet after addition : " + hashSet.size());
	   
	    hashSet.remove(new Integer("1"));
	    System.out.println("Size of HashSet after removal : " + hashSet.size());
	  }
}
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