diff --git a/src/MainClass.java b/src/com/albertoventurini/MainClass.java
similarity index 78%
rename from src/MainClass.java
rename to src/com/albertoventurini/MainClass.java
index 308e4d9..b878e2f 100644
--- a/src/MainClass.java
+++ b/src/com/albertoventurini/MainClass.java
@@ -1,3 +1,9 @@
+package com.albertoventurini;
+
+import com.albertoventurini.juliaset.JuliaSetCalculator;
+import com.albertoventurini.juliaset.JuliaSetPanel;
+import com.albertoventurini.juliaset.ThreadedJuliaSetCalculator;
+
 import javax.swing.*;
 import java.awt.*;
 
diff --git a/src/ExecutorServiceJuliaSetCalculator.java b/src/com/albertoventurini/juliaset/ExecutorServiceJuliaSetCalculator.java
similarity index 97%
rename from src/ExecutorServiceJuliaSetCalculator.java
rename to src/com/albertoventurini/juliaset/ExecutorServiceJuliaSetCalculator.java
index ff6721f..917de65 100644
--- a/src/ExecutorServiceJuliaSetCalculator.java
+++ b/src/com/albertoventurini/juliaset/ExecutorServiceJuliaSetCalculator.java
@@ -1,5 +1,5 @@
-import java.util.ArrayList;
-import java.util.List;
+package com.albertoventurini.juliaset;
+
 import java.util.concurrent.*;
 
 
diff --git a/src/ForkJoinJuliaSetCalculator.java b/src/com/albertoventurini/juliaset/ForkJoinJuliaSetCalculator.java
similarity index 98%
rename from src/ForkJoinJuliaSetCalculator.java
rename to src/com/albertoventurini/juliaset/ForkJoinJuliaSetCalculator.java
index f502224..aae1b40 100644
--- a/src/ForkJoinJuliaSetCalculator.java
+++ b/src/com/albertoventurini/juliaset/ForkJoinJuliaSetCalculator.java
@@ -1,3 +1,5 @@
+package com.albertoventurini.juliaset;
+
 import java.util.concurrent.ForkJoinPool;
 import java.util.concurrent.RecursiveAction;
 
diff --git a/src/JuliaSetCalculator.java b/src/com/albertoventurini/juliaset/JuliaSetCalculator.java
similarity index 84%
rename from src/JuliaSetCalculator.java
rename to src/com/albertoventurini/juliaset/JuliaSetCalculator.java
index db7fcb3..29c451e 100644
--- a/src/JuliaSetCalculator.java
+++ b/src/com/albertoventurini/juliaset/JuliaSetCalculator.java
@@ -1,3 +1,5 @@
+package com.albertoventurini.juliaset;
+
 public interface JuliaSetCalculator {
 
     int[][] calculate(
diff --git a/src/JuliaSetPanel.java b/src/com/albertoventurini/juliaset/JuliaSetPanel.java
similarity index 97%
rename from src/JuliaSetPanel.java
rename to src/com/albertoventurini/juliaset/JuliaSetPanel.java
index f252fcf..c1b1360 100644
--- a/src/JuliaSetPanel.java
+++ b/src/com/albertoventurini/juliaset/JuliaSetPanel.java
@@ -1,3 +1,5 @@
+package com.albertoventurini.juliaset;
+
 import javax.swing.*;
 import java.awt.*;
 import java.awt.image.BufferedImage;
diff --git a/src/ThreadedJuliaSetCalculator.java b/src/com/albertoventurini/juliaset/ThreadedJuliaSetCalculator.java
similarity index 96%
rename from src/ThreadedJuliaSetCalculator.java
rename to src/com/albertoventurini/juliaset/ThreadedJuliaSetCalculator.java
index da379c3..65dc18f 100644
--- a/src/ThreadedJuliaSetCalculator.java
+++ b/src/com/albertoventurini/juliaset/ThreadedJuliaSetCalculator.java
@@ -1,3 +1,5 @@
+package com.albertoventurini.juliaset;
+
 public class ThreadedJuliaSetCalculator implements JuliaSetCalculator {
 
     private int width;
@@ -62,7 +64,7 @@ public class ThreadedJuliaSetCalculator implements JuliaSetCalculator {
             try {
                 threads[i].join();
             } catch(Exception e) {
-                // No!
+                e.printStackTrace();
             }
         }