Java Collections: LinkedHashSet Example

·         Hash table and linked list implementation of the Set interface

·         LinkedHashSet differs from HashSet in that the order is maintained

·         Performance is below that of HashSet, due to the expense of maintaining the linked list

·         Its methods are not synchronized

 

 

Example

package mycollectiontest;

import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;

public class LinkedHashSetExample {

       public static void main(String[] args) {
              // Create a LinkedHashSet
              Set<String> lHashSet = new LinkedHashSet<String>();
              lHashSet.add("Bangalore");
              lHashSet.add("Chennai");
              lHashSet.add("Cochin");
              System.out.println(lHashSet);

              // Iterating
              Iterator<String> it = lHashSet.iterator();

              while (it.hasNext())
                     System.out.println("Elements " + it.next());
       }
}

Output

[Bangalore, Chennai, Cochin]
Elements Bangalore
Elements Chennai
Elements Cochin