The linkedhashset set makes the elements orderly without repetition

package haxi;

import java.util.LinkedHashSet;

public class Linkedhashset {

	public static void main(String[] args) {
		// TODO  Automatically generated method stubs 
		LinkedHashSet<String> s1 = new LinkedHashSet<>();
		s1.add("hello");
		s1.add("world");
		s1.add("java");
		for (String string : s1) {
			System.out.println(string);
			/**
			 * hello world java
			 * 
			 */

		}
		System.out.println(" Linked list guarantee sequence , Hash guarantees no repetition. Next, add repetition java--------->");
		s1.add("java");
		for (String string : s1) {
			System.out.println(string);
			/**
			 * hello world java  Linked list guarantee sequence , Hash guarantees no repetition. Next, add repetition java---------> hello world java
			 */
		}
	}

}