Java 8: stream(), map() and collect()

StreamMap.java

// In Java 8, there are stream(), map() and collect() for better collection manipulation
ArrayList<String> list = new ArrayList<>();
for(Person person : people)
{
	list.add( person.getNickName() );
}

// The above code is shortened with the below
List<String> list = people.stream().map( Person::getNickName ).collect( Collectors.toList() );

// The collection
ArrayList<Person> people = new ArrayList<>();
people.add( new Person( "Tom Hanks", "Tommy") );
people.add( new Person( "Anthony Hopkins", "Tony") );
people.add( new Person( "Benjamin Franklin", "Ben") );

// public class Person
// {
//   final String name;
//   final String nickName;

//   public Person( String name, String nickName )
//   {
//   	this.name = name;
//   	this.nickName = nickName;
//   }

//   public String getName()
//   {
//   	return name;
//   }

//   public String getNickName()
//   {
//   	return nickName;
//   }
// }