http://it.i88.ca/2015/09/java-lambda-expression-simple-example.html

Java Lambda Expression Simple Example.java

/**
 *
 * @author i88.ca
 */
public class Main {

    public static void main(String[] args) {

        String[] atp = {"Johon Doe", "Peter Smith", "Bruce Lee", "Jacky Chen"};
        List<String> contacts = Arrays.asList(atp);

// Old looping
        for (String contact : contacts) {
            System.out.print(contact + "; ");
        }
        System.out.println();
// Using lambda expression and functional operations
        contacts.forEach((contact) -> System.out.print(contact + "; "));
        System.out.println();
// Using double colon operator in Java 8
        contacts.forEach(System.out::println);
    }
}