ClosuresBlog2Streams.java

public static void main (String[] args) { 
    List inputList = 
            Arrays.asList("functional", "programming", "with", "closures"); 

    List mappedList = inputList.stream().map(s -> s.length()).collect(toList()); 

    System.out.println("Initial List: " + inputList); 
    System.out.println("Mapped List: " + mappedList); 
}