$ git clone git@github.com:twilio/twilio-java.
$ cd twilio-java 
$ mvn install       # Requires maven, download from http://maven.apache.org/download.html

   <dependency>
      <groupId>com.twilio.sdk</groupId>
      <artifactId>twilio-client</artifactId>
      <version>3.3.7</version>
      <scope>compile</scope>
   </dependency>

    // Create a rest client
    TwilioRestClient client = new TwilioRestClient(ACCOUNT_SID, AUTH_TOKEN);

    // Get the main account (The one we used to authenticate the client)
    Account mainAccount = client.getAccount();

    // Get all accounts including sub accounts
    AccountList accountList = client.getAccounts();

    // All lists implement an iterable interface, you can use the foreach
    // syntax on them
    for (Account a : accountList) {
        System.out.println(a.getFriendlyName());
    }

    // You can also iterate manually...
    Iterator<Account> itr = accountList.iterator();
    while (itr.hasNext()) {
        Account a = itr.next();
        System.out.println(a.getFriendlyName());
    }

    // You can also get just the first page of data
    accountList = client.getAccounts();
    List<Account> accounts = accountList.getPageData();

    // Make a call
    CallFactory callFactory = mainAccount.getCallFactory();
    Map<String, String> callParams = new HashMap<String, String>();
    callParams.put("To", "5105551212"); // Replace with a valid phone number
    callParams.put("From", "(510) 555-1212"); // Replace with a valid phone number in your account
    callParams.put("Url", "http://demo.twilio.com/welcome/voice/");
    Call call = callFactory.create(callParams);
    System.out.println(call.getSid());

    // Send an sms
    SmsFactory smsFactory = mainAccount.getSmsFactory();
    Map<String, String> smsParams = new HashMap<String, String>();
    smsParams.put("To", "5105551212"); // Replace with a valid phone number
    smsParams.put("From", "(510) 555-1212"); // Replace with a valid phone number in your account
    smsParams.put("Body", "This is a test message!");
    smsFactory.create(smsParams);

    // Search for available phone numbers & then buy a random phone number
    AvailablePhoneNumberList phoneNumbers = mainAccount.getAvailablePhoneNumbers();
    List<AvailablePhoneNumber> list = phoneNumbers.getPageData();

    // Buy the first number returned
    Map<String, String> params = new HashMap<String, String>();
    params.put("PhoneNumber", list.get(0).getPhoneNumber());
    params.put("VoiceUrl", "http://demo.twilio.com/welcome/voice/");
    mainAccount.getIncomingPhoneNumberFactory().create(params);

    // View a conference using its sid
    Conference c = mainAccount.getConference("CA12345...");
    ParticipantList participants = c.getParticipants();

    for (Participant p : participants) {
        // Randomly mute or kick each participant
        if (Math.random() > 0.5) {
            p.mute();
        } else {
            p.kick();
        }
    }

    // Make a raw HTTP request to the api... note, this is deprecated style
    TwilioRestResponse resp = client.request("/2010-04-01/Accounts", "GET", null);
    if (!resp.isError()) {
        System.out.println(resp.getResponseText());
    }