Remove specified element from Java HashSet

   package org.best.example;
    /*
      Remove specified element from Java HashSet example
      This Java Example shows how to remove a specified object or element
      contained in Java HashSet object using remove method.
    */
    
    import java.util.HashSet;
    
    public class RemoveSpecifiedElementFromHashSetExample {
    
      public static void main(String[] args) {
    
        //create object of HashSet
        HashSet hSet = new HashSet();
      
        //add elements to HashSet object
        hSet.add(new Integer("1"));
        hSet.add(new Integer("2"));
        hSet.add(new Integer("3"));
      
        System.out.println("HashSet before removal : " + hSet);
      
        /*
          To remove an element from Java HashSet object use,
          boolean remove(Object o) method.
          This method removes an element from HashSet if it is present and returns
          true. Otherwise remove method returns false.
        */
      
        boolean blnRemoved = hSet.remove(new Integer("2"));
        System.out.println("Was 2 removed from HashSet ? " + blnRemoved);
      
        System.out.println("HashSet after removal : " + hSet);
      }
    }
    
    /*
    Output would be
    HashSet before removal : [3, 2, 1]
    Was 2 removed from HashSet ? true
    HashSet after removal : [3, 1]
    */