Java 10 set with local variable Var and Different ways to iterate

Java10SetWithLocalVar.java

 package com.java9r;

import java.util.HashSet;

public class Java10SetWithLocalVar {

 public static void main(String[] args) {
  var products = new HashSet<>();
  products.add("product 1");
  products.add("product 2");
  products.add("product 3");
  products.add("product 4");
  products.add("product 5");
  products.add("product 6");

  System.out.println("Iterate list using Enhanced for loop");
  System.out.println("======================================");
  for (var product : products) {
   System.out.println("Name: " + product);
  }

  System.out.println("Iterate list using Stream API");
  System.out.println("======================================");
  products.forEach((product) -> {
   System.out.println("Name: " + product);

  });

  System.out.println("Iterate list using for loop");
  System.out.println("======================================");
  // for(Iterator<String> product = products.iterator();it.hasNext();) {
  for (var product = products.iterator(); product.hasNext();) {

   System.out.println("Name : " + product.next());
  }

  System.out.println("Iterate list using while loop");
  System.out.println("======================================");
  // Iterator<String> product = products.iterator();
  var product = products.iterator();
  while (product.hasNext()) {

   System.out.println("Name : " + product.next());
  }

  System.out.println("Iterate list using streaming example method reference");
  System.out.println("======================================");

  products.stream().forEach((name) -> System.out.println(name));

 }

}

Output

 Iterate list using Enhanced for loop
======================================
Name: product 5
Name: product 6
Name: product 3
Name: product 4
Name: product 1
Name: product 2
Iterate list using Stream API
======================================
Name: product 5
Name: product 6
Name: product 3
Name: product 4
Name: product 1
Name: product 2
Iterate list using for loop
======================================
Name : product 5
Name : product 6
Name : product 3
Name : product 4
Name : product 1
Name : product 2
Iterate list using while loop
======================================
Name : product 5
Name : product 6
Name : product 3
Name : product 4
Name : product 1
Name : product 2
Iterate list using streaming example method reference
======================================
product 5
product 6
product 3
product 4
product 1
product 2