Easy Example Java 8 Streams

import java.util.ArrayList;
import java.util.Arrays;
import java.util.stream.Collectors;

/***
 * PackageName PACKAGE_NAME
 * Created by mhafidi on 30/04/2017.
 * <p>
 * * A simple introduction to using Streams && with Collectors
 * * @title Example Java 8 Dubious_1
 * * @author MHI
 * * @since Jan 27, 2016
 **/


//The following example will show you how streams can shrink your code and make it easier to maintain.

public class HelloLambdaExpressionStream
{
  final static String ALPHA = "alpha";

  private HelloLambdaExpressionStream()
  {

  }

  public static void main(String args[])
  {

    //let's consider the following string array:
    ArrayList<String> lStringList = new ArrayList<>(Arrays.asList("alpha_1", "alpha_2", "beta", "gamma"));

    //now, we would like to collect all the strings that contain the expression "alpha" into a new collection.
    //1) first solution: a trivial way to that but not very elegant is the following
    ArrayList<String> lnewStringList = new ArrayList<>();
    for (String lelt : lStringList)
    {
      if (lelt.contains(ALPHA))
      {
        lnewStringList.add(lelt);
      }

    }

    //2) second solution: Stream java 8 consideration
    ArrayList<String> lnewStringListJava8 = new ArrayList<>(lStringList.stream().filter(t -> t.contains(ALPHA)).
    collect(Collectors.toList()));

  }

}