Hash Set in java

+++++++++++++++++ Hash Set Class++++++++++++++
HashSet class uses hashtable to store the elements, It extends AbstartctSet class implements Set interface
HashSet contains only unique elemets.
HashSet contains only Values

 Difference between List and Set:
 
 - List can contains duplicate elements whereas Set contains unique elemenets only.

++++++++++ Sample code using HashSet class +++++++++
package collections;

import java.util.HashSet;
import java.util.Iterator;

public class HashSet_Example {
public static void main(String[] args) {
    HashSet<String> hset=new HashSet<String>();
    hset.add("pabbu");
    hset.add("pabbu");
    hset.add("reddy");
    hset.add("abcd");
    System.out.println("Printin all values from HaseSet: " + hset);
    Iterator<String> itr=hset.iterator();
    while (itr.hasNext()) {
    System.out.println("printin vaue using iterator : " + itr.next());
       
    }
   
}
}

Output :
Printin all values from HaseSet: [pabbu, reddy, abcd]
printin vaue using iterator : pabbu
printin vaue using iterator : reddy
printin vaue using iterator : abcd