diff --git a/build/classes/java/main/join/Main.class b/build/classes/java/main/join/Main.class
index 2946019686eaf577e2b43de45880ddb9d13335a0..2ae0d963ee70256e5cb64139da6cf3db2c71dfd7 100644
Binary files a/build/classes/java/main/join/Main.class and b/build/classes/java/main/join/Main.class differ
diff --git a/build/classes/java/main/join/MyThread.class b/build/classes/java/main/join/MyThread.class
index dff7bcaab0e7f2ef5971449a0b71b8c0525d51cf..168cc296e629ae37d7f503beb85e8b1c59d08d52 100644
Binary files a/build/classes/java/main/join/MyThread.class and b/build/classes/java/main/join/MyThread.class differ
diff --git a/build/classes/java/main/producerConsumer/Consumer.class b/build/classes/java/main/producerConsumer/Consumer.class
index 8d4380cff125d333e16aad1548d4d12f19d7ddc7..7348d91d359ab31923d40a7ddb13a09bf007aa82 100644
Binary files a/build/classes/java/main/producerConsumer/Consumer.class and b/build/classes/java/main/producerConsumer/Consumer.class differ
diff --git a/build/classes/java/main/producerConsumer/Main.class b/build/classes/java/main/producerConsumer/Main.class
index 7c87885d1ee0c579c875527e5f961084a20dee0c..e65e0e682846e063e95ce5ea2117952ce1eb2c9e 100644
Binary files a/build/classes/java/main/producerConsumer/Main.class and b/build/classes/java/main/producerConsumer/Main.class differ
diff --git a/build/classes/java/main/producerConsumer/Producer.class b/build/classes/java/main/producerConsumer/Producer.class
index 6d346b3304e8c2e1f5348edd569ab3798813d841..cc232c50b4c818e510686290b74d0139e0da68cd 100644
Binary files a/build/classes/java/main/producerConsumer/Producer.class and b/build/classes/java/main/producerConsumer/Producer.class differ
diff --git a/build/classes/java/main/producerConsumer/Queue.class b/build/classes/java/main/producerConsumer/Queue.class
index b155823de0a0ced6fb21c8929b331cf67bde4911..5977dbcb6949408042cea2f9b3c544f07f823081 100644
Binary files a/build/classes/java/main/producerConsumer/Queue.class and b/build/classes/java/main/producerConsumer/Queue.class differ
diff --git a/build/classes/java/main/semaphore/Main.class b/build/classes/java/main/semaphore/Main.class
index 6e7db4067f6e83ba23a282637a564fab022f557d..0f9e9656816af4523b12333b30582afe6cf38686 100644
Binary files a/build/classes/java/main/semaphore/Main.class and b/build/classes/java/main/semaphore/Main.class differ
diff --git a/build/classes/java/main/semaphore/MyThread.class b/build/classes/java/main/semaphore/MyThread.class
index 957a150b4844b534ed3f15cc240f35e41179407f..ecf3f4842a41f05edb10860a161b4c01a7252a12 100644
Binary files a/build/classes/java/main/semaphore/MyThread.class and b/build/classes/java/main/semaphore/MyThread.class differ
diff --git a/build/classes/java/main/semaphore/Semaphore.class b/build/classes/java/main/semaphore/Semaphore.class
index 46ce2ecb0fd05ade46b044b47cf90acbfbaf1f36..ac7fd47119a94b494d163a7f5076377e46f69ee2 100644
Binary files a/build/classes/java/main/semaphore/Semaphore.class and b/build/classes/java/main/semaphore/Semaphore.class differ
diff --git a/src/main/java/join/Main.java b/src/main/java/join/Main.java
index fedf709e108f112645527d78f906be8ce1faabd5..aefad1c6386d50335332d76f2b2510816b553552 100644
--- a/src/main/java/join/Main.java
+++ b/src/main/java/join/Main.java
@@ -9,19 +9,22 @@ public class Main {
     public static void main(String arg[]) throws Exception {
         Random r = new Random();
         ArrayList<Thread> threads = new ArrayList<Thread>();
+
         //create some threads
         for (int i=0; i<10; i++) {
             MyThread mt = new MyThread(r);
             threads.add(mt);
         }
         System.out.println("All threads have been created.");
+
         //start all the threads
         for (Thread t: threads) {
             t.start();
         }
         System.out.println("All threads have been started.");
         System.out.println("Start waiting for all thread to finish...");
-        //wait all the thread to finish
+
+        //wait all the threads to finish
         for (Thread t : threads) {
             t.join();
         }
diff --git a/src/main/java/semaphore/Main.java b/src/main/java/semaphore/Main.java
index 1315fcb9c50198b78c467582bdfb8ecf244117fb..3e82d2b4bd9a88f78ec4b876113b95216f6dcaf8 100644
--- a/src/main/java/semaphore/Main.java
+++ b/src/main/java/semaphore/Main.java
@@ -8,13 +8,14 @@ public class Main {
         Random r = new Random();
         ArrayList<Thread> threads = new ArrayList<Thread>();
         Semaphore s = new Semaphore(4);
-        //create some threads
+
+        //Create some threads
         for (int i=0; i<10; i++) {
             MyThread mt = new MyThread(r, i, s);
             threads.add(mt);
         }
 
-        //start all the threads
+        //Start all the threads
         for (Thread t: threads) {
             t.start();
         }
diff --git a/src/main/java/semaphore/MyThread.java b/src/main/java/semaphore/MyThread.java
index b15b661a4991216a734d2bb80e78cdd9fbaaf642..0209e0a475385ac07b39d401a76db2933e09d55f 100644
--- a/src/main/java/semaphore/MyThread.java
+++ b/src/main/java/semaphore/MyThread.java
@@ -10,23 +10,27 @@ public class MyThread extends Thread {
     MyThread(Random r, int i, Semaphore s) {
         rnd = r;
         id = i;
-        sem=s;
+        sem = s;
     }
 
     public void run() {
-        wasteSomeTime(); //Simulate the thread is doing something else
+        //Simulate the thread is doing something else
+        wasteSomeTime();
         System.out.println("Thread " + id + " wants to enter in the critical region");
         sem.enter();
         System.out.println("Thread " + id + " entered in the critical region!");
-        wasteSomeTime(); //it takes some times to compleate the work in the critical region
+
+        //It takes some times to complete the work in the critical region
+        wasteSomeTime();
         System.out.println("Thread " + id + " is going to get out from the critical region");
         sem.exit();
-    }//end run
+    }
+    //End run
 
     private void wasteSomeTime() {
         int seconds = rnd.nextInt(10) + 1;
         try {Thread.sleep(seconds*1000);}
         catch(Exception ex) {ex.printStackTrace();}
     }
-} //end class
+}
 
diff --git a/src/main/java/semaphore/Semaphore.java b/src/main/java/semaphore/Semaphore.java
index f075e31a324242c6bdcc46cf721d4beffac57d39..a932afc2f861afc1c4374b7f356c9ebe0f657624 100644
--- a/src/main/java/semaphore/Semaphore.java
+++ b/src/main/java/semaphore/Semaphore.java
@@ -1,9 +1,13 @@
-package semaphore;//Classe che implementa tramite wait e notify un Semaforo.
-//Se non vi ricordate cosa sia un semaforo, google is your best friend.
+package semaphore;
+/*
+This class implements a samafor through the use of wait and notify
+ */
 
 public class Semaphore {
-    private int maxNumber; //numero massimo di thread
-    private int threadsIn; //conteggio dei thread nell'area critica
+    //Maximum number of threads
+    private int maxNumber;
+    //Number of threads in the critical region
+    private int threadsIn;
 
     Semaphore(int max) {
         maxNumber = max;
@@ -12,7 +16,8 @@ public class Semaphore {
 
     public synchronized void enter() {
         System.out.println("" + threadsIn + " in the critical region...");
-        //quando abbiamo raggiunto il numero massimo di thread, chi vuole entrare aspetta
+
+        // When the maximum number of threads is reached, new threads have to wait
         while (threadsIn >= maxNumber) {
             try {this.wait();}
             catch(InterruptedException ie) {ie.printStackTrace();}
@@ -23,7 +28,7 @@ public class Semaphore {
 
     public synchronized void exit() {
         threadsIn--;
-        //quando un thread esce dall'area critica, sveglia qualcuno in attesa di entrare (se presente)
+        // When a thread exits the critical region, it wakes another threads (if there is one) that's waiting to enter the critical region
         this.notify();
     }
 }