src/exercises/ex_s2/TestingAtomicInteger.java

@@ -1,42 +0,0 @@
-package exercises.ex_s2;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.concurrent.atomic.AtomicIntegerArray;
-
-public class TestingAtomicInteger {
-    public static void main(String[] args) throws InterruptedException {
-        int[] nonAtomic = new int[5];
-        AtomicIntegerArray atomic = new AtomicIntegerArray(5);
-
-        for (int i = 0; i < 5; i++) {
-            nonAtomic[i] = i;
-            atomic.set(i, i);
-        }
-
-        System.out.println("Starting values atomic array: " + atomic);
-        System.out.println("Starting values of non atomic array: " + Arrays.toString(nonAtomic));
-        System.out.println("Creating 3 threads to increment the values within those two arrays");
-
-        Thread[] threads = new Thread[3];
-        for (int i = 0; i < 3; i++) {
-            threads[i] = new Thread(() -> {
-                for (int j = 0; j < 100000; j++) {
-                    for (int k = 0; k < 5; k++) {
-                        nonAtomic[k] += 1;
-                        atomic.incrementAndGet(k);
-                    }
-                }
-            });
-            threads[i].start();
-        }
-
-        for (int i = 0; i < 3; i++) {
-            threads[i].join();
-        }
-
-        System.out.println("Final values atomic array: " + atomic);
-        System.out.println("Final values of non atomic array: " + Arrays.toString(nonAtomic));
-    }
-}

src/exercises/ex_s3/AbstractTweet.java

@@ -1,20 +0,0 @@
-package exercises.ex_s3;
-
-public abstract class AbstractTweet {
-    private String author;
-    private String content;
-
-    public AbstractTweet(String author, String content) {
-        this.author = author;
-        this.content = content;
-    }
-
-    public abstract void addLike();
-    public abstract void removeLike();
-    public abstract long getLikes();
-
-    @Override
-    public String toString() {
-        return "@" + author + " tweeted \"" + content + "\" (" + getLikes() + " likes)";
-    }
-}

src/exercises/ex_s3/AtomicTweet.java

@@ -1,27 +0,0 @@
-package exercises.ex_s3;
-
-import java.util.concurrent.atomic.AtomicLong;
-
-public class AtomicTweet extends AbstractTweet {
-
-    private AtomicLong likes = new AtomicLong(0);
-
-    public AtomicTweet(String author, String content) {
-        super(author, content);
-    }
-
-    @Override
-    public void addLike() {
-        likes.incrementAndGet();
-    }
-
-    @Override
-    public void removeLike() {
-        likes.updateAndGet(i -> i > 0 ? i - 1 : i);
-    }
-
-    @Override
-    public long getLikes() {
-        return likes.get();
-    }
-}

src/exercises/ex_s3/TestingAtomicLong.java

@@ -1,32 +0,0 @@
-package exercises.ex_s3;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class TestingAtomicLong {
-    public static String[] names = {
-        "Alice", "Bob", "Charlie", "Derek", "Emily",
-        "Fionna", "Greg", "Harry", "Isabella", "Julia"
-    };
-    public static void main(String[] args) throws InterruptedException {
-        List<AbstractTweet> tweets = new ArrayList<>();
-        AbstractTweet tweet1 = new Tweet("Alice", "Java is cool !");
-        AbstractTweet tweet2 = new AtomicTweet("Bob", "ISC is the best !");
-        tweets.add(tweet1);
-        tweets.add(tweet2);
-
-        Thread[] users = new Thread[10];
-
-        for (int i = 0; i < 10; i++) {
-            users[i] = new Thread(new User(names[i], tweets));
-            users[i].start();
-        }
-
-        for (int i = 0; i < 10; i++) {
-            users[i].join();
-        }
-
-        System.out.println(tweet1);
-        System.out.println(tweet2);
-    }
-}

src/exercises/ex_s3/Tweet.java

@@ -1,21 +0,0 @@
-package exercises.ex_s3;
-
-public class Tweet extends AbstractTweet {
-    private long likes = 0;
-
-    public Tweet(String author, String content) {
-        super(author, content);
-    }
-
-    public void addLike() {
-        likes += 1;
-    }
-
-    public void removeLike() {
-        likes -= 1;
-    }
-
-    public long getLikes() {
-        return likes;
-    }
-}

src/exercises/ex_s3/User.java

@@ -1,24 +0,0 @@
-package exercises.ex_s3;
-
-import java.util.List;
-
-public class User implements Runnable {
-    private final String name;
-    private final List<AbstractTweet> tweets;
-
-    public User(String name, List<AbstractTweet> tweets) {
-        this.name = name;
-        this.tweets = tweets;
-    }
-
-    @Override
-    public void run() {
-        for (int i = 0; i < 100000; i++) {
-            if (i % 10 == 9) {
-                tweets.forEach(AbstractTweet::removeLike);
-            } else {
-                tweets.forEach(AbstractTweet::addLike);
-            }
-        }
-    }
-}