Example usage for java.util Set iterator

Introduction

In this page you can find the example usage for java.util Set iterator.

Prototype

Iterator<E> iterator();

Source Link

Document

Returns an iterator over the elements in this set.

Usage

From source file:SetDemo.java

public static void main(String[] argv) {
    //+//w  ww . j a v a  2s.com
    Set h = new HashSet();
    h.add("One");
    h.add("Two");
    h.add("One"); // DUPLICATE
    h.add("Three");
    Iterator it = h.iterator();
    while (it.hasNext()) {
        System.out.println(it.next());
    }
    //-
}

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From source file:cat.tv3.eng.rec.recomana.lupa.visualization.RecommendationToJson.java

public static void main(String[] args) throws IOException {
    final int TOTAL_WORDS = 20;
    String host = args[0];//from w  ww .j a  v a2 s  .  c  o m
    int port = Integer.parseInt(args[1]);
    Jedis jedis = new Jedis(host, port, 20000);

    String[] recommendation_keys = jedis.keys("recommendations_*").toArray(new String[0]);

    for (int i = 0; i < recommendation_keys.length; ++i) {
        JSONArray recommendations = new JSONArray();
        String[] split_reco_name = recommendation_keys[i].split("_");
        String id = split_reco_name[split_reco_name.length - 1];

        Set<Tuple> recos = jedis.zrangeWithScores(recommendation_keys[i], 0, -1);
        Iterator<Tuple> it = recos.iterator();

        while (it.hasNext()) {
            Tuple t = it.next();

            JSONObject new_reco = new JSONObject();
            new_reco.put("id", t.getElement());
            new_reco.put("distance", (double) Math.round(t.getScore() * 10000) / 10000);

            recommendations.add(new_reco);
        }
        saveResults(recommendations, id);
    }
    jedis.disconnect();
}

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From source file:IteratorEnumeration.java

public static void main(String[] args) {
    Set<String> set = new HashSet<String>();
    set.add("a");
    set.add("b");
    set.add("c");
    set.add("d");
    Enumeration<String> x = new IteratorEnumeration<String>(set.iterator());
    while (x.hasMoreElements()) {
        System.out.println(x.nextElement());
    }/* ww w .  j  ava  2 s . c o  m*/
}

---

From source file:Main.java

public static void main(String[] argv) throws Exception {

    Set<String> set = new LinkedHashSet<String>();

    // Add some elements
    set.add("1");
    set.add("2");
    set.add("3");
    set.add("2");

    // List the elements
    for (Iterator it = set.iterator(); it.hasNext();) {
        Object o = it.next();//  ww  w  . j  a v  a 2  s  .c om
    }
}

---

From source file:com.impetus.kvapps.runner.AppRunner.java

/**
 * main runner method/* ww  w .j ava 2s . c  o m*/
 * @param args takes excel data file as input argument args[0].
 */
public static void main(String[] args) {

    // Override CQL version while instantiating entity manager factory.

    EntityManagerFactory emf = Persistence.createEntityManagerFactory("twissandra,twingo,twirdbms");
    EntityManager em = emf.createEntityManager();

    try {

        //populate user set from excel sheet.
        Set<User> users = UserBroker.brokeUserList(args[0]);

        for (Iterator<User> iterator = users.iterator(); iterator.hasNext();) {
            User user = (User) iterator.next();

            // on Persist
            ExecutorService.onPersist(em, user);

            // on find by id.
            ExecutorService.findByKey(em, "BigDataUser");

            List<User> fetchedUsers = ExecutorService.onQueryByEmail(em, user);

            if (fetchedUsers != null && fetchedUsers.size() > 0) {
                logger.info(user.toString());
            }

            logger.info("");
            System.out.println("#######################Querying##########################################");
            logger.info("");
            logger.info("");

        }

        // Execute wild search query.
        String query = "Select u from User u";
        logger.info(query);
        ExecutorService.findByQuery(em, query);

        // // Execute native CQL. Fetch tweets for given user.
        logger.info("");
        System.out.println("#######################Querying##########################################");
        logger.info("");
        logger.info("");

        query = "Select * from tweets where user_id='RDBMSUser'";
        logger.info(query);
        ExecutorService.findByNativeQuery(em, query);
    } finally {
        onDestroyDBResources(emf, em);
    }
}

---

From source file:SetDemo.java

public static void main(String[] args) {
    String[] letters = { "A", "B", "C", "D", "E" };

    Set s = new HashSet();

    for (int i = 0; i < letters.length; i++)
        s.add(letters[i]);/* w  w  w  .  j a  v a 2  s. co m*/

    if (!s.add(letters[0]))
        System.out.println("Cannot add a duplicate.\n");

    Iterator iter = s.iterator();
    while (iter.hasNext())
        System.out.println(iter.next());

    System.out.println("");

    SortedSet ss = new TreeSet();

    for (int i = 0; i < letters.length; i++)
        ss.add(letters[i]);

    if (!ss.add(letters[0]))
        System.out.println("Cannot add a duplicate.\n");

    iter = ss.iterator();
    while (iter.hasNext())
        System.out.println(iter.next());
}

---

From source file:GetWebPageApp.java

public static void main(String args[]) throws Exception {
    String resource, host, file;// w w w .  jav a2  s . c om
    int slashPos;

    resource = "www.java2s.com/index.htm"; // skip HTTP://
    slashPos = resource.indexOf('/'); // find host/file separator
    if (slashPos < 0) {
        resource = resource + "/";
        slashPos = resource.indexOf('/');
    }
    file = resource.substring(slashPos); // isolate host and file parts
    host = resource.substring(0, slashPos);
    System.out.println("Host to contact: '" + host + "'");
    System.out.println("File to fetch : '" + file + "'");

    SocketChannel channel = null;

    try {
        Charset charset = Charset.forName("ISO-8859-1");
        CharsetDecoder decoder = charset.newDecoder();
        CharsetEncoder encoder = charset.newEncoder();

        ByteBuffer buffer = ByteBuffer.allocateDirect(1024);
        CharBuffer charBuffer = CharBuffer.allocate(1024);

        InetSocketAddress socketAddress = new InetSocketAddress(host, 80);
        channel = SocketChannel.open();
        channel.configureBlocking(false);
        channel.connect(socketAddress);

        selector = Selector.open();

        channel.register(selector, SelectionKey.OP_CONNECT | SelectionKey.OP_READ);

        while (selector.select(500) > 0) {
            Set readyKeys = selector.selectedKeys();
            try {
                Iterator readyItor = readyKeys.iterator();

                while (readyItor.hasNext()) {

                    SelectionKey key = (SelectionKey) readyItor.next();
                    readyItor.remove();
                    SocketChannel keyChannel = (SocketChannel) key.channel();

                    if (key.isConnectable()) {
                        if (keyChannel.isConnectionPending()) {
                            keyChannel.finishConnect();
                        }
                        String request = "GET " + file + " \r\n\r\n";
                        keyChannel.write(encoder.encode(CharBuffer.wrap(request)));
                    } else if (key.isReadable()) {
                        keyChannel.read(buffer);
                        buffer.flip();

                        decoder.decode(buffer, charBuffer, false);
                        charBuffer.flip();
                        System.out.print(charBuffer);

                        buffer.clear();
                        charBuffer.clear();

                    } else {
                        System.err.println("Unknown key");
                    }
                }
            } catch (ConcurrentModificationException e) {
            }
        }
    } catch (UnknownHostException e) {
        System.err.println(e);
    } catch (IOException e) {
        System.err.println(e);
    } finally {
        if (channel != null) {
            try {
                channel.close();
            } catch (IOException ignored) {
            }
        }
    }
    System.out.println("\nDone.");
}

---

From source file:MainClass.java

public static void main(String args[]) {
    Set simpsons = new HashSet();
    simpsons.add("B");
    simpsons.add("H");
    simpsons.add("L");
    simpsons = Collections.synchronizedSet(simpsons);
    synchronized (simpsons) {
        Iterator iter = simpsons.iterator();
        while (iter.hasNext()) {
            System.out.println(iter.next());
        }/* w  w  w. ja v  a 2s . c o m*/
    }
    Map map = Collections.synchronizedMap(new HashMap(89));
    Set set = map.entrySet();
    synchronized (map) {
        Iterator iter = set.iterator();
        while (iter.hasNext()) {
            System.out.println(iter.next());
        }
    }
}

---

From source file:ItemSet.java

public static void main(String args[]) {
    String names[] = { "Item 1", "Item 2", "Item 3" };
    Set moons = new HashSet();
    int namesLen = names.length;
    int index;//  w  w  w .  j  a  v  a2s .c om
    for (int i = 0; i < 100; i++) {
        index = (int) (Math.random() * namesLen);
        moons.add(names[index]);
    }
    Iterator it = moons.iterator();
    while (it.hasNext()) {
        System.out.println(it.next());
    }
    System.out.println("---");
    Set orderedMoons = new TreeSet(moons);
    it = orderedMoons.iterator();
    while (it.hasNext()) {
        System.out.println(it.next());
    }
}

---

From source file:com.cloud.test.utils.SubmitCert.java

public static void main(String[] args) {
    // Parameters
    List<String> argsList = Arrays.asList(args);
    Iterator<String> iter = argsList.iterator();
    while (iter.hasNext()) {
        String arg = iter.next();

        if (arg.equals("-c")) {
            certFileName = iter.next();// ww  w. jav  a 2s  .co m
        }

        if (arg.equals("-s")) {
            secretKey = iter.next();
        }

        if (arg.equals("-a")) {
            apiKey = iter.next();
        }

        if (arg.equals("-action")) {
            url = "Action=" + iter.next();
        }
    }

    Properties prop = new Properties();
    try {
        prop.load(new FileInputStream("conf/tool.properties"));
    } catch (IOException ex) {
        s_logger.error("Error reading from conf/tool.properties", ex);
        System.exit(2);
    }

    host = prop.getProperty("host");
    port = prop.getProperty("port");

    if (url.equals("Action=SetCertificate") && certFileName == null) {
        s_logger.error("Please set path to certificate (including file name) with -c option");
        System.exit(1);
    }

    if (secretKey == null) {
        s_logger.error("Please set secretkey  with -s option");
        System.exit(1);
    }

    if (apiKey == null) {
        s_logger.error("Please set apikey with -a option");
        System.exit(1);
    }

    if (host == null) {
        s_logger.error("Please set host in tool.properties file");
        System.exit(1);
    }

    if (port == null) {
        s_logger.error("Please set port in tool.properties file");
        System.exit(1);
    }

    TreeMap<String, String> param = new TreeMap<String, String>();

    String req = "GET\n" + host + ":" + prop.getProperty("port") + "\n/" + prop.getProperty("accesspoint")
            + "\n";
    String temp = "";

    if (certFileName != null) {
        cert = readCert(certFileName);
        param.put("cert", cert);
    }

    param.put("AWSAccessKeyId", apiKey);
    param.put("Expires", prop.getProperty("expires"));
    param.put("SignatureMethod", prop.getProperty("signaturemethod"));
    param.put("SignatureVersion", "2");
    param.put("Version", prop.getProperty("version"));

    StringTokenizer str1 = new StringTokenizer(url, "&");
    while (str1.hasMoreTokens()) {
        String newEl = str1.nextToken();
        StringTokenizer str2 = new StringTokenizer(newEl, "=");
        String name = str2.nextToken();
        String value = str2.nextToken();
        param.put(name, value);
    }

    //sort url hash map by key
    Set c = param.entrySet();
    Iterator it = c.iterator();
    while (it.hasNext()) {
        Map.Entry me = (Map.Entry) it.next();
        String key = (String) me.getKey();
        String value = (String) me.getValue();
        try {
            temp = temp + key + "=" + URLEncoder.encode(value, "UTF-8") + "&";
        } catch (Exception ex) {
            s_logger.error("Unable to set parameter " + value + " for the command " + param.get("command"), ex);
        }

    }
    temp = temp.substring(0, temp.length() - 1);
    String requestToSign = req + temp;
    String signature = UtilsForTest.signRequest(requestToSign, secretKey);
    String encodedSignature = "";
    try {
        encodedSignature = URLEncoder.encode(signature, "UTF-8");
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    String url = "http://" + host + ":" + prop.getProperty("port") + "/" + prop.getProperty("accesspoint") + "?"
            + temp + "&Signature=" + encodedSignature;
    s_logger.info("Sending request with url:  " + url + "\n");
    sendRequest(url);
}

---

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