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Java Introduction to Functional Programming Meet Streams Collecting 3 NES Scores

Nancy Melucci
PLUS
Nancy Melucci
Courses Plus Student 34,558 Points

How to implement collect method in functional programming challenge

Since this challenge does not seem to require that we create a Stream method, I am unsure how to implement the .collect method in a manner similar to that in the video...my code which runs but does not pass two of the tests, follows...

package com.teamtreehouse.challenges.highscores;

import com.teamtreehouse.challenges.highscores.model.Score;
import com.teamtreehouse.challenges.highscores.service.ScoreService;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class Main {

  public static void main(String[] args) {
    ScoreService service = new ScoreService();
    List<Score> scores = service.getAllScores();
    System.out.printf("There are %d total scores. %n %n", scores.size());
    System.out.println("Imperatively - First 3 'Nintendo Entertainment System' Scores");
    List<Score> nintendoScores = getFirstThreeNintendoScoresImperatively(scores);
    nintendoScores.forEach(System.out::println);
    System.out.println("Declaratively - First 3 'Nintendo Entertainment System' Scores");
    // NOTE:  Reassigning here
    nintendoScores = getFirstThreeNintendoScoresDeclaratively(scores);
    nintendoScores.forEach(System.out::println);
  }

  public static List<Score> getFirstThreeNintendoScoresImperatively(List<Score> scores) {
    List<Score> result = new ArrayList<>();
    // Four score and 7 years ago....#dadjoke
    for (Score score : scores) {
      if (score.getPlatform().equals("Nintendo Entertainment System")) {
         result.add(score);
         if (result.size() >= 3) {
           break;
         }
      }
    }
    return result;
  }

  public static List<Score> getFirstThreeNintendoScoresDeclaratively(List<Score> scores) {
    // TODO: Filter the scores stream to be of platform 'Nintendo Entertainment System'
    List<Score> nintendoScores = new ArrayList<>();
    for (Score score : scores) {
      String platform = score.getPlatform().toLowerCase();
      if (platform.contains("Nintendo")) {
        nintendoScores.add(score);
        if (nintendoScores.size() > 3){
          break;
        }
      }
      }
    // TODO: Limit it to 3 scores
    // TODO: Return a newly collected list using the collect method
    return nintendoScores;
  }

  public static void printBurgerTimeScoresImperatively(List<Score> scores) {
    for (Score score : scores) {
      if (score.getGame().equals("Burger Time") && score.getAmount() >= 20000) {
        System.out.println(score);
      }
    }
  }

  public static void printBurgerTimeScoresDeclaratively(List<Score> scores) {
    scores.stream()
            .filter(score -> score.getGame().equals("Burger Time"))
            .filter(score -> score.getAmount() >= 20000)
            .forEach(System.out::println);
  }

}