Example usage for java.util LinkedList LinkedList

Introduction

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

Prototype

public LinkedList() 

Source Link

Document

Constructs an empty list.

Usage

From source file:com.apipulse.bastion.Main.java

public static void main(String[] args) throws IOException, ClassNotFoundException {
    log.info("Bastion starting. Loading chains");
    final File dir = new File("etc/chains");

    final LinkedList<ActorRef> chains = new LinkedList<ActorRef>();
    for (File file : dir.listFiles()) {
        if (!file.getName().startsWith(".") && file.getName().endsWith(".yaml")) {
            log.info("Loading chain: " + file.getName());
            ChainConfig config = new ChainConfig(IOUtils.toString(new FileReader(file)));
            ActorRef ref = BastionActors.getInstance().initChain(config.getName(),
                    Class.forName(config.getQualifiedClass()));
            Iterator<StageConfig> iterator = config.getStages().iterator();
            while (iterator.hasNext())
                ref.tell(iterator.next(), null);
            chains.add(ref);/*from   ww  w  .jav a2 s. co  m*/
        }
    }
    SpringApplication app = new SpringApplication();
    HashSet<Object> objects = new HashSet<Object>();
    objects.add(ApiController.class);
    final ConfigurableApplicationContext context = app.run(ApiController.class, args);
    Runtime.getRuntime().addShutdownHook(new Thread() {
        @Override
        public void run() {
            try {
                log.info("Bastion shutting down");
                Iterator<ActorRef> iterator = chains.iterator();
                while (iterator.hasNext())
                    iterator.next().tell(new StopMessage(), null);
                Thread.sleep(2000);
                context.stop();
                log.info("Bastion shutdown complete");
            } catch (Exception e) {
            }
        }
    });
}

---

From source file:com.dsclab.loader.app.Loader.java

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

    if (args.length != 4) {
        LOG.warn("Usage:bin/Loader <Loader's config path>");
        System.exit(0);//from w w  w .j  av  a 2  s.  c  o m
    }
    String configPath = args[3];
    Configs prop = new Configs(configPath);

    LOG.info("From MySql : " + prop.getInputURL());
    LOG.info("Task Size : " + prop.getTaskSize());

    tableTask = new LinkedList<TableTask>();
    Droptable dd = new Droptable();
    createTable(prop);
    load(prop);
}

---

From source file:com.semsaas.jsonxml.tools.JsonXpath.java

public static void main(String[] args) {
    /*/*from   w  w w. j a  v a 2  s  . c o m*/
     * Process options
     */
    LinkedList<String> files = new LinkedList<String>();
    LinkedList<String> expr = new LinkedList<String>();
    boolean help = false;
    String activeOption = null;
    String error = null;

    for (int i = 0; i < args.length && error == null && !help; i++) {
        if (activeOption != null) {
            if (activeOption.equals("-e")) {
                expr.push(args[i]);
            } else if (activeOption.equals("-h")) {
                help = true;
            } else {
                error = "Unknown option " + activeOption;
            }
            activeOption = null;
        } else {
            if (args[i].startsWith("-")) {
                activeOption = args[i];
            } else {
                files.push(args[i]);
            }
        }
    }

    if (error != null) {
        System.err.println(error);
        showHelp();
    } else if (help) {
        showHelp();
    } else {
        try {
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();

            for (String f : files) {
                System.out.println("*** " + f + " ***");
                try {
                    // Create a JSON XML reader
                    XMLReader reader = XMLReaderFactory.createXMLReader("com.semsaas.jsonxml.JsonXMLReader");

                    // Prepare a reader with the JSON file as input
                    InputStreamReader stringReader = new InputStreamReader(new FileInputStream(f));
                    SAXSource saxSource = new SAXSource(reader, new InputSource(stringReader));

                    // Prepare a DOMResult which will hold the DOM of the xjson
                    DOMResult domResult = new DOMResult();

                    // Run SAX processing through a transformer
                    // (This could be done more simply, but we have here the opportunity to pass our xjson through
                    // an XSLT and get a legacy XML output ;) )
                    transformer.transform(saxSource, domResult);
                    Node dom = domResult.getNode();

                    XPathFactory xpathFactory = XPathFactory.newInstance();
                    for (String x : expr) {
                        try {
                            XPath xpath = xpathFactory.newXPath();
                            xpath.setNamespaceContext(new NamespaceContext() {
                                public Iterator getPrefixes(String namespaceURI) {
                                    return null;
                                }

                                public String getPrefix(String namespaceURI) {
                                    return null;
                                }

                                public String getNamespaceURI(String prefix) {
                                    if (prefix == null) {
                                        return XJSON.XMLNS;
                                    } else if ("j".equals(prefix)) {
                                        return XJSON.XMLNS;
                                    } else {
                                        return null;
                                    }
                                }
                            });
                            NodeList nl = (NodeList) xpath.evaluate(x, dom, XPathConstants.NODESET);
                            System.out.println("-- Found " + nl.getLength() + " nodes for xpath '" + x
                                    + "' in file '" + f + "'");
                            for (int i = 0; i < nl.getLength(); i++) {
                                System.out.println(" +(" + i + ")+ ");
                                XMLJsonGenerator handler = new XMLJsonGenerator();
                                StringWriter buffer = new StringWriter();
                                handler.setOutputWriter(buffer);

                                SAXResult result = new SAXResult(handler);
                                transformer.transform(new DOMSource(nl.item(i)), result);

                                System.out.println(buffer.toString());
                            }
                        } catch (XPathExpressionException e) {
                            System.err.println("-- Error evaluating '" + x + "' on file '" + f + "'");
                            e.printStackTrace();
                        } catch (TransformerException e) {
                            System.err.println("-- Error evaluating '" + x + "' on file '" + f + "'");
                            e.printStackTrace();
                        }
                    }
                } catch (FileNotFoundException e) {
                    System.err.println("File '" + f + "' was not found");
                } catch (SAXException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (TransformerException e) {
                    e.printStackTrace();
                }
            }
        } catch (TransformerConfigurationException e) {
            e.printStackTrace();
        }
    }
}

---

From source file:example.Publisher.java

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

    String user = env("ACTIVEMQ_USER", "admin");
    String password = env("ACTIVEMQ_PASSWORD", "password");
    String host = env("ACTIVEMQ_HOST", "localhost");
    int port = Integer.parseInt(env("ACTIVEMQ_PORT", "1883"));
    final String destination = arg(args, 0, "/topic/event");

    int messages = 10000;
    int size = 256;

    String DATA = "abcdefghijklmnopqrstuvwxyz";
    String body = "";
    for (int i = 0; i < size; i++) {
        body += DATA.charAt(i % DATA.length());
    }//from w  w w.j a  v  a 2s.  co  m
    Buffer msg = new AsciiBuffer(body);

    MQTT mqtt = new MQTT();
    mqtt.setHost(host, port);
    mqtt.setUserName(user);
    mqtt.setPassword(password);

    FutureConnection connection = mqtt.futureConnection();
    connection.connect().await();

    final LinkedList<Future<Void>> queue = new LinkedList<Future<Void>>();
    UTF8Buffer topic = new UTF8Buffer(destination);
    for (int i = 1; i <= messages; i++) {

        // Send the publish without waiting for it to complete. This allows us
        // to send multiple message without blocking..
        queue.add(connection.publish(topic, msg, QoS.AT_LEAST_ONCE, false));

        // Eventually we start waiting for old publish futures to complete
        // so that we don't create a large in memory buffer of outgoing message.s
        if (queue.size() >= 1000) {
            queue.removeFirst().await();
        }

        if (i % 1000 == 0) {
            System.out.println(String.format("Sent %d messages.", i));
        }
    }

    queue.add(connection.publish(topic, new AsciiBuffer("SHUTDOWN"), QoS.AT_LEAST_ONCE, false));
    while (!queue.isEmpty()) {
        queue.removeFirst().await();
    }

    connection.disconnect().await();

    System.exit(0);
}

---

From source file:interoperabilite.webservice.fluent.FluentAsync.java

public static void main(String[] args) throws Exception {
    // Use pool of two threads
    ExecutorService threadpool = Executors.newFixedThreadPool(2);
    Async async = Async.newInstance().use(threadpool);

    Request[] requests = new Request[] { Request.Get("http://www.google.com/"),
            Request.Get("http://www.yahoo.com/"), Request.Get("http://www.apache.com/"),
            Request.Get("http://www.apple.com/") };

    Queue<Future<Content>> queue = new LinkedList<Future<Content>>();
    // Execute requests asynchronously
    for (final Request request : requests) {
        Future<Content> future = async.execute(request, new FutureCallback<Content>() {

            @Override//  www.  j av a 2 s  .c o m
            public void failed(final Exception ex) {
                System.out.println(ex.getMessage() + ": " + request);
            }

            @Override
            public void completed(final Content content) {
                System.out.println("Request completed: " + request);
            }

            @Override
            public void cancelled() {
            }

        });
        queue.add(future);
    }

    while (!queue.isEmpty()) {
        Future<Content> future = queue.remove();
        try {
            future.get();
        } catch (ExecutionException ex) {
        }
    }
    System.out.println("Done");
    threadpool.shutdown();
}

---

From source file:org.eclipse.swordfish.core.configuration.xml.SaxParsingPrototype.java

/**
 * @param args/*from w  ww .ja va2s .  c  o m*/
 */
public static void main(String[] args) throws Exception {
    XMLInputFactory inputFactory = XMLInputFactory.newInstance();
    LinkedList<String> currentElements = new LinkedList<String>();
    InputStream in = SaxParsingPrototype.class.getResource("ComplexPidXmlProperties.xml").openStream();
    XMLEventReader eventReader = inputFactory.createXMLEventReader(in);
    Map<String, List<String>> props = new HashMap<String, List<String>>();
    // Read the XML document
    while (eventReader.hasNext()) {
        XMLEvent event = eventReader.nextEvent();
        if (event.isCharacters() && !event.asCharacters().isWhiteSpace()) {
            putElement(props, getQualifiedName(currentElements), event.asCharacters().getData());

        } else if (event.isStartElement()) {
            System.out.println(event.asStartElement().getName());
            currentElements.add(event.asStartElement().getName().getLocalPart());
            for (Iterator attrIt = event.asStartElement().getAttributes(); attrIt.hasNext();) {
                Attribute attribute = (Attribute) attrIt.next();
                putElement(props, getQualifiedName(currentElements) + "[@" + attribute.getName() + "]",
                        attribute.getValue());

            }
        } else if (event.isAttribute()) {
        } else if (event.isEndElement()) {
            String lastElem = event.asEndElement().getName().getLocalPart();
            if (!currentElements.getLast().equals(lastElem)) {
                throw new UnsupportedOperationException(lastElem + "," + currentElements.getLast());
            }
            currentElements.removeLast();
        }
    }

    eventReader.close();
}

---

From source file:dk.alexandra.fresco.framework.configuration.ConfigurationGenerator.java

public static void main(String args[]) {
    if (args.length == 0) {
        usage();/*from ww w  .j  a  v a2 s .  c o  m*/
    }

    if (args.length % 2 != 0) {
        System.out.println("Incorrect number of arguments: " + Arrays.asList(args) + ".");
        System.out.println();
        usage();
    }

    List<Pair<String, Integer>> hosts = new LinkedList<Pair<String, Integer>>();
    int inx = 0;
    try {

        for (; inx < args.length; inx = inx + 2) {
            hosts.add(new Pair<String, Integer>(args[inx], new Integer(args[inx + 1])));
        }
    } catch (NumberFormatException ex) {
        System.out.println("Invalid argument for port: \"" + args[inx + 1] + "\".");
        System.exit(1);
    }

    inx = 1;
    try {
        for (; inx < hosts.size() + 1; inx++) {
            String filename = "party-" + inx + ".ini";
            OutputStream out = new FileOutputStream(filename);
            new ConfigurationGenerator().generate(inx, out, hosts);
            out.close();
            System.out.println("Created configuration file: " + filename + ".");
        }
    } catch (Exception ex) {
        System.out.println("Could not write to file: party-" + inx + ".ini.");
        System.exit(1);
    }

}

---

From source file:com.ok2c.lightmtp.examples.MailUserAgentExample.java

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

    String text1 = "From: root\r\n" + "To: testuser1\r\n" + "Subject: test message 1\r\n" + "\r\n"
            + "This is a short test message 1\r\n";
    String text2 = "From: root\r\n" + "To: testuser1, testuser2\r\n" + "Subject: test message 2\r\n" + "\r\n"
            + "This is a short test message 2\r\n";
    String text3 = "From: root\r\n" + "To: testuser1, testuser2, testuser3\r\n" + "Subject: test message 3\r\n"
            + "\r\n" + "This is a short test message 3\r\n";

    List<DeliveryRequest> requests = new ArrayList<DeliveryRequest>();
    requests.add(new BasicDeliveryRequest("root", Arrays.asList("testuser1"),
            new ByteArraySource(text1.getBytes("US-ASCII"))));
    requests.add(new BasicDeliveryRequest("root", Arrays.asList("testuser1", "testuser2"),
            new ByteArraySource(text2.getBytes("US-ASCII"))));
    requests.add(new BasicDeliveryRequest("root", Arrays.asList("testuser1", "testuser2", "testuser3"),
            new ByteArraySource(text3.getBytes("US-ASCII"))));

    MailUserAgent mua = new DefaultMailUserAgent(TransportType.SMTP, IOReactorConfig.DEFAULT);
    mua.start();//from  w w w.j a va 2 s. co m

    try {

        InetSocketAddress address = new InetSocketAddress("localhost", 2525);

        Queue<Future<DeliveryResult>> queue = new LinkedList<Future<DeliveryResult>>();
        for (DeliveryRequest request : requests) {
            queue.add(mua.deliver(new SessionEndpoint(address), 0, request, null));
        }

        while (!queue.isEmpty()) {
            Future<DeliveryResult> future = queue.remove();
            DeliveryResult result = future.get();
            System.out.println("Delivery result: " + result);
        }

    } finally {
        mua.shutdown();
    }
}

---

From source file:org.sbq.batch.mains.ActivityEmulator.java

public static void main(String[] vars) throws IOException {
    System.out.println("ActivityEmulator - STARTED.");
    ActivityEmulator activityEmulator = new ActivityEmulator();
    activityEmulator.begin();/* w  w  w  .j  a  va2  s.  co m*/
    System.out.println("Enter your command: >");
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    String command = null;
    while (!"stop".equals(command = in.readLine())) {
        if ("status".equals(command)) {
            List<String> onlineUsers = new LinkedList<String>();
            for (Map.Entry<String, AtomicBoolean> entry : activityEmulator.getUserStatusByLogin().entrySet()) {
                if (entry.getValue().get()) {
                    onlineUsers.add(entry.getKey());
                }
            }
            System.out.println("Users online: " + Arrays.toString(onlineUsers.toArray()));
            System.out.println("Number of cycles left: " + activityEmulator.getBlockingQueue().size());

        }
        System.out.println("Enter your command: >");
    }
    activityEmulator.stop();
    System.out.println("ActivityEmulator - STOPPED.");
}

---

From source file:com.alibaba.rocketmq.example.benchmark.Consumer.java

public static void main(String[] args) throws MQClientException {
    Options options = ServerUtil.buildCommandlineOptions(new Options());
    CommandLine commandLine = ServerUtil.parseCmdLine("benchmarkConsumer", args,
            buildCommandlineOptions(options), new PosixParser());
    if (null == commandLine) {
        System.exit(-1);//ww w  .  j  a  va  2 s.  com
    }

    final String topic = commandLine.hasOption('t') ? commandLine.getOptionValue('t').trim() : "BenchmarkTest";
    final String groupPrefix = commandLine.hasOption('g') ? commandLine.getOptionValue('g').trim()
            : "benchmark_consumer";
    final String isPrefixEnable = commandLine.hasOption('p') ? commandLine.getOptionValue('p').trim() : "true";
    String group = groupPrefix;
    if (Boolean.parseBoolean(isPrefixEnable)) {
        group = groupPrefix + "_" + Long.toString(System.currentTimeMillis() % 100);
    }

    System.out.printf("topic %s group %s prefix %s%n", topic, group, isPrefixEnable);

    final StatsBenchmarkConsumer statsBenchmarkConsumer = new StatsBenchmarkConsumer();

    final Timer timer = new Timer("BenchmarkTimerThread", true);

    final LinkedList<Long[]> snapshotList = new LinkedList<Long[]>();

    timer.scheduleAtFixedRate(new TimerTask() {
        @Override
        public void run() {
            snapshotList.addLast(statsBenchmarkConsumer.createSnapshot());
            if (snapshotList.size() > 10) {
                snapshotList.removeFirst();
            }
        }
    }, 1000, 1000);

    timer.scheduleAtFixedRate(new TimerTask() {
        private void printStats() {
            if (snapshotList.size() >= 10) {
                Long[] begin = snapshotList.getFirst();
                Long[] end = snapshotList.getLast();

                final long consumeTps = (long) (((end[1] - begin[1]) / (double) (end[0] - begin[0])) * 1000L);
                final double averageB2CRT = (end[2] - begin[2]) / (double) (end[1] - begin[1]);
                final double averageS2CRT = (end[3] - begin[3]) / (double) (end[1] - begin[1]);

                System.out.printf(
                        "Consume TPS: %d Average(B2C) RT: %7.3f Average(S2C) RT: %7.3f MAX(B2C) RT: %d MAX(S2C) RT: %d%n",
                        consumeTps, averageB2CRT, averageS2CRT, end[4], end[5]);
            }
        }

        @Override
        public void run() {
            try {
                this.printStats();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }, 10000, 10000);

    DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(group);
    consumer.setInstanceName(Long.toString(System.currentTimeMillis()));

    consumer.subscribe(topic, "*");

    consumer.registerMessageListener(new MessageListenerConcurrently() {
        @Override
        public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                ConsumeConcurrentlyContext context) {
            MessageExt msg = msgs.get(0);
            long now = System.currentTimeMillis();

            statsBenchmarkConsumer.getReceiveMessageTotalCount().incrementAndGet();

            long born2ConsumerRT = now - msg.getBornTimestamp();
            statsBenchmarkConsumer.getBorn2ConsumerTotalRT().addAndGet(born2ConsumerRT);

            long store2ConsumerRT = now - msg.getStoreTimestamp();
            statsBenchmarkConsumer.getStore2ConsumerTotalRT().addAndGet(store2ConsumerRT);

            compareAndSetMax(statsBenchmarkConsumer.getBorn2ConsumerMaxRT(), born2ConsumerRT);

            compareAndSetMax(statsBenchmarkConsumer.getStore2ConsumerMaxRT(), store2ConsumerRT);

            return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
        }
    });

    consumer.start();

    System.out.printf("Consumer Started.%n");
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• »