Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial


Maximilian Hertelendy
Maximilian Hertelendy
18,148 Points

Local Code Challenge

I stuck with this type of challenge. I waited for weeks and nothing happened ("the test are running"). What did I wrong?

public class Printer {

  public static void main(String[] args) {
    List<String> chipmunks = Arrays.asList("Alvin", "Simon", "Theodore");
    System.out.println("Imperative results:");
    System.out.println("Declarative results:");

  public static void printChipmunksImperatively(List<String> chipmunks) {
    for (String chipmunk : chipmunks) {
      System.out.printf("%s! %n", chipmunk);

  public static void printChipmunksDeclaratively(List<String> chipmunks) {
    // TODO: Print out each of the chipmunks using the forEach method on Iterable
    Consumer<String> printer = chipmunk -> System.out.printf("%s! %n", chipmunk);

I uploaded my submissions in September and "the test are still running". I have the same problem with this type of challange multiple times.