title: Saving an object that contains a list of objects to the disk
body: <p>The title may be a little be confusing or even missleading but im trying to save to disk an object that as a property contains a list of objects (ArrayList).</p>
  
  <p>The thing is this object wont be able to do anything without the list. </p>
  
  <p>I have tried serialization of both the object and the list. When i tried serializing the object alone there was nothing in it, the list was empty. When i tried serializing the list i could access the list, change it but at the cost of many thrown exceptions.</p>
  
  <pre><code>public class AdressBook implements Serializable {
  
      /**
       * 
       */
      private static final long serialVersionUID = 6399534374362987383L;
  
      static Reader reader = new KeyboardReader();
  
      static ArrayList&lt;Contact&gt; AdressBook = new ArrayList&lt;Contact&gt;();
  
      public AdressBook(){
  
      }
  
      public static void AddContact(){
          AdressBook.add(new Contact());
      }
  
      public static void EditContact(){
          System.out.println("Which contact you desire to edit?");
          Libreta.Display();
          System.out.println("Type in the number of the contact.");
          int i = (reader.readint() - 1);
  
          System.out.println("Choose the change 1.Name 2.Last Name 3.Nickname 4.Phone number 5.Emails");
          int j = reader.readint();
  
                 switch(j){
  
          case 1: AdressBook.get(i).setName();
                  break;
  
          case 2: AdressBook.get(i).setLastName();
                  break;
  
          case 3: AdressBook.get(i).setNick();
                  break;
  
          case 4: AdressBook.get(i).AddPhoneNumber();
                  break;
  
          case 5: AdressBook.get(i).AddEmail();
                  break;
  
          default : System.out.println("Not a valid option");
  
          }
  </code></pre>
  
  <p>I have to be able to edit the list of the object and being able to somehow save it again. I have been trying many ways but im lacking in knowledge or it just doesnt work for me.</p>