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POHow to override a loop fetching messages in a method
 

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    <p>I have a Bluetooth server receiving data from a client, a mobile phone. The code I'm using looks the following</p> <pre><code>@Override public void run() { try { this.localDevice = LocalDevice.getLocalDevice(); this.localDevice.setDiscoverable(DiscoveryAgent.GIAC); this.server = (StreamConnectionNotifier) Connector.open(URL); while(true) { if(this.connection == null) { this.connection = this.server.acceptAndOpen(); System.out.println("INFO: Bluetooth client connected"); BufferedReader reader = new BufferedReader(new InputStreamReader(connection.openInputStream())); this.writer = new BufferedWriter(new OutputStreamWriter(connection.openOutputStream())); String line; while((line = reader.readLine()) != null) { if(line.equals("--#do:disconnect")) { break; } System.out.println("INFO: Received from Bluetooth: " + line); } System.out.println("INFO: Client disconnected"); } } } catch(BluetoothStateException ex) { ex.printStackTrace(); } catch(IOException ex) { ex.printStackTrace(); } } </code></pre> <p>As you can see, I have an infinitive loop receiving messages until it is told to stop. At the moment the loop receives all the messages. There is a problem with that. The class where the code is used is a model class in MVC. In the class I also have a method called <code>getContacts()</code>. It is used to receive contacts from the phone over Bluetooth. The phone is told to send the contacts when the server sends <code>--#do:getcontacts</code>. </p> <p>What I need to do is to get the contacts in an ArrayList in the <code>getContacts()</code> method and return it as the return value of the method so that the controller can handle the contacts. </p> <pre><code>public ArrayList&lt;Contact&gt; getContacts() { ArrayList&lt;Contact&gt; contacts = new ArrayList&lt;&gt;(); // How do I get the contacts in the ArrayList? return contacts; } </code></pre>
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    1. COCan't you just make the contacts a field of whatever class this is in? Access to it could then be done using "return Collections.unmodifiableList(contacts)".
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    2. COI would suggest not limiting your class/methods to a particular implementation type. I would recommend using the List interface instead.
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    3. COWould you show what you mean? I didn't really get it...
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