Example usage for java.util List add

List of usage examples for java.util List add

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Introduction

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

Prototype

boolean add(E e);

Source Link

Document

Appends the specified element to the end of this list (optional operation).

Usage

From source file:Main.java

public static void main(String[] args) {
    List<Integer> numbers = new ArrayList<Integer>();

    for (Integer i : Arrays.asList(0, 1, 2, 3, 4, 5, 6, 7))
        numbers.add(i);
    printList(numbers); // 0,1,2,3,4,5,6,7

    // replaces each element with twice its value
    for (int index = 0; index < numbers.size(); index++) {
        numbers.set(index, numbers.get(index) * 2);
    }/*ww w .  ja  va2s .  c  o m*/
    printList(numbers);

    // does nothing because list is not being changed
    for (Integer number : numbers) {
        number++;
    }
    printList(numbers);

    // same as above -- just different syntax
    for (Iterator<Integer> iter = numbers.iterator(); iter.hasNext();) {
        Integer number = iter.next();
        number++;
    }
    printList(numbers);

    for (ListIterator<Integer> iter = numbers.listIterator(); iter.hasNext();) {
        Integer number = iter.next();
        iter.add(number + 1);
    }
    printList(numbers);

    for (Iterator<Integer> iter = numbers.iterator(); iter.hasNext();) {
        Integer number = iter.next();
        if (number % 2 == 0) // if number is even
            iter.remove(); // remove it from the collection
    }
    printList(numbers); // 1,3,5,7,9,11,13,15

    // ListIterator<?> has a "set" method to replace elements
    for (ListIterator<Integer> iter = numbers.listIterator(); iter.hasNext();) {
        Integer number = iter.next();
        iter.set(number / 2); // divide each element by 2
    }
    printList(numbers); // 0,1,2,3,4,5,6,7

    // Use Java 8 Lambda
    List<Integer> list = numbers;
    list.stream().forEach(elem -> System.out.println("element " + elem));

}

From source file:com.oocl.euc.ita.test.QuickStart.java

public static void main(String[] args) throws Exception {
    CloseableHttpClient httpclient = HttpClients.createDefault();
    try {/*from ww  w .  j  ava  2  s  .  c  om*/

        //           HttpPost?
        HttpPost httpPost = new HttpPost("http://localhost:8080/qb-webapp/login");
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
        nvps.add(new BasicNameValuePair("username", "Neolarry"));
        nvps.add(new BasicNameValuePair("password", "123456789"));
        httpPost.setEntity(new UrlEncodedFormEntity(nvps, "UTF-8"));
        CloseableHttpResponse response2 = httpclient.execute(httpPost);

        try {
            //                 System.out.println(response2.getStatusLine());
            HttpEntity entity2 = response2.getEntity();
            // do something useful with the response body
            // and ensure it is fully consumed
            EntityUtils.consume(entity2);
        } finally {
            response2.close();
        }

        HttpGet httpGet = new HttpGet("http://localhost:8080/qb-webapp/api/trainer");
        System.out.println(httpGet.getURI());
        CloseableHttpResponse response1 = httpclient.execute(httpGet);
        // The underlying HTTP connection is still held by the response object
        // to allow the response content to be streamed directly from the network socket.
        // In order to ensure correct deallocation of system resources
        // the user MUST call CloseableHttpResponse#close() from a finally clause.
        // Please note that if response content is not fully consumed the underlying
        // connection cannot be safely re-used and will be shut down and discarded
        // by the connection manager.
        try {
            //                System.out.println("get: "+response1.getStatusLine());
            HttpEntity entity1 = response1.getEntity();
            // do something useful with the response body
            // and ensure it is fully consumed
            String responseString = "";

            if (entity1 != null) {
                //     
                //                    System.out.println("Response content length: " + entity1.getContentLength());  
                System.out.println(responseString = EntityUtils.toString(entity1));
                // ?                      
            }

            //JsonToObject
            //              JSONArray s = JSONArray.parseArray(responseString);
            //              for (int i = 0; i < s.size(); i++) {
            //                 System.out.println(s.get(i));
            //              }

            EntityUtils.consume(entity1);
        } finally {
            response1.close();
        }

    } finally {
        httpclient.close();
    }
}

From source file:com.sm.store.TestGZStoreServer.java

public static void main(String[] args) {
    String[] opts = new String[] { "-store", "-path", "-port", "-mode", "-delay" };
    String[] defaults = new String[] { "store", "./data", "7100", "0", "false" };
    String[] paras = getOpts(args, opts, defaults);
    String p0 = paras[0];/*from w  w w .  j a  va 2 s.c om*/
    int port = Integer.valueOf(paras[2]);
    String path = paras[1];
    int mode = Integer.valueOf(paras[3]);
    boolean delay = Boolean.valueOf(paras[4]);
    String[] stores = p0.split(",");
    List<TupleThree<String, String, Integer>> storeList = new ArrayList<TupleThree<String, String, Integer>>();
    for (String store : stores) {
        storeList.add(new TupleThree<String, String, Integer>(store, path, mode));

    }
    GZRemoteStoreServer rs = new GZRemoteStoreServer(port, storeList, delay);
    logger.info("hookup jvm shutdown process");
    rs.hookShutdown();
    List list = new ArrayList();
    //add jmx metric
    for (String store : stores) {
        list.add(rs.getRemoteStore(store));
    }
    list.add(rs);
    JmxService jms = new JmxService(list);
}

From source file:org.hcmut.emr.SessionBuilder.java

public static void main(String[] args) throws FileNotFoundException, IOException {
    try (BufferedReader br = new BufferedReader(
            new FileReader("/home/sinhlk/myspace/emr/src/main/resources/patern"))) {
        ObjectMapper jsonMapper = new ObjectMapper();
        String line = br.readLine();
        Map<String, String> result = new HashMap<String, String>();
        List<NameValuePair> list = new ArrayList<>();

        while (line != null) {
            if (line != null && line != "") {
                list.add(new BasicNameValuePair(line.trim().toLowerCase(), SessionBuilder.buildValue(line)));
                result.put(line.trim().toLowerCase(), SessionBuilder.buildValue(line));
                line = br.readLine();//  w  w  w.  j  a  va 2  s  .c  o m
            }
        }
        System.out.println(jsonMapper.writeValueAsString(list));
        File file = new File("/home/sinhlk/myspace/emr/src/main/resources/session.js");
        jsonMapper.writeValue(file, list);
    }

}

From source file:com.sm.store.TestStoreServer.java

public static void main(String[] args) {
    String[] opts = new String[] { "-store", "-path", "-port", "-mode", "-delay" };
    String[] defaults = new String[] { "store", "./storepath", "7100", "0", "false" };
    String[] paras = getOpts(args, opts, defaults);
    String p0 = paras[0];//  w  ww  .  j av a2  s. c  o  m
    int port = Integer.valueOf(paras[2]);
    String path = paras[1];
    int mode = Integer.valueOf(paras[3]);
    boolean delay = Boolean.valueOf(paras[4]);
    String[] stores = p0.split(",");
    List<TupleThree<String, String, Integer>> storeList = new ArrayList<TupleThree<String, String, Integer>>();
    for (String store : stores) {
        storeList.add(new TupleThree<String, String, Integer>(store, path, mode));

    }
    RemoteStoreServer rs = new RemoteStoreServer(port, storeList, delay);
    logger.info("hookup jvm shutdown process");
    rs.hookShutdown();
    List list = new ArrayList();
    //add jmx metric
    for (String store : stores) {
        list.add(rs.getRemoteStore(store));
    }
    list.add(rs);
    JmxService jms = new JmxService(list);
}

From source file:com.amazonaws.services.kinesis.samples.datavis.HttpReferrerStreamWriter.java

/**
 * Start a number of threads and send randomly generated {@link HttpReferrerPair}s to a Kinesis Stream until the
 * program is terminated./* www.jav a 2 s .  c  o  m*/
 *
 * @param args Expecting 3 arguments: A numeric value indicating the number of threads to use to send
 *        data to Kinesis and the name of the stream to send records to, and the AWS region in which these resources
 *        exist or should be created.
 * @throws InterruptedException If this application is interrupted while sending records to Kinesis.
 */
public static void main(String[] args) throws InterruptedException {
    if (args.length != 3) {
        System.err.println("Usage: " + HttpReferrerStreamWriter.class.getSimpleName()
                + " <number of threads> <stream name> <region>");
        System.exit(1);
    }

    int numberOfThreads = Integer.parseInt(args[0]);
    String streamName = args[1];
    Region region = SampleUtils.parseRegion(args[2]);

    AWSCredentialsProvider credentialsProvider = new DefaultAWSCredentialsProviderChain();
    ClientConfiguration clientConfig = SampleUtils.configureUserAgentForSample(new ClientConfiguration());
    AmazonKinesis kinesis = new AmazonKinesisClient(credentialsProvider, clientConfig);
    kinesis.setRegion(region);

    // The more resources we declare the higher write IOPS we need on our DynamoDB table.
    // We write a record for each resource every interval.
    // If interval = 500ms, resource count = 7 we need: (1000/500 * 7) = 14 write IOPS minimum.
    List<String> resources = new ArrayList<>();
    resources.add("/index.html");

    // These are the possible referrers to use when generating pairs
    List<String> referrers = new ArrayList<>();
    referrers.add("http://www.amazon.com");
    referrers.add("http://www.google.com");
    referrers.add("http://www.yahoo.com");
    referrers.add("http://www.bing.com");
    referrers.add("http://www.stackoverflow.com");
    referrers.add("http://www.reddit.com");

    HttpReferrerPairFactory pairFactory = new HttpReferrerPairFactory(resources, referrers);

    // Creates a stream to write to with 2 shards if it doesn't exist
    StreamUtils streamUtils = new StreamUtils(kinesis);
    streamUtils.createStreamIfNotExists(streamName, 2);
    LOG.info(String.format("%s stream is ready for use", streamName));

    final HttpReferrerKinesisPutter putter = new HttpReferrerKinesisPutter(pairFactory, kinesis, streamName);

    ExecutorService es = Executors.newCachedThreadPool();

    Runnable pairSender = new Runnable() {
        @Override
        public void run() {
            try {
                putter.sendPairsIndefinitely(DELAY_BETWEEN_RECORDS_IN_MILLIS, TimeUnit.MILLISECONDS);
            } catch (Exception ex) {
                LOG.warn(
                        "Thread encountered an error while sending records. Records will no longer be put by this thread.",
                        ex);
            }
        }
    };

    for (int i = 0; i < numberOfThreads; i++) {
        es.submit(pairSender);
    }

    LOG.info(String.format("Sending pairs with a %dms delay between records with %d thread(s).",
            DELAY_BETWEEN_RECORDS_IN_MILLIS, numberOfThreads));

    es.shutdown();
    es.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
}

From source file:de.jwi.ftp.FTPUploader.java

public static void main(String[] args) throws Exception {
    URL url = new URL("ftp://ftp:none@localhost/tmp");
    String protocol = url.getProtocol();

    String host = url.getHost();/*from  www .  j a v a2  s. c  o  m*/
    String userInfo = url.getUserInfo();
    String path = url.getPath();
    String file = url.getFile();

    File f = new File("D:/temp/out");
    List l = new ArrayList();
    l.add(f);
    String s = upload(url, l);
    System.out.println(s);
    int x = 5;
}

From source file:com.alertlogic.aws.kinesis.test1.StreamWriter.java

/**
 * Start a number of threads and send randomly generated {@link HttpReferrerPair}s to a Kinesis Stream until the
 * program is terminated.//  www  .ja  v a  2 s  .  c  o  m
 *
 * @param args Expecting 3 arguments: A numeric value indicating the number of threads to use to send
 *        data to Kinesis and the name of the stream to send records to, and the AWS region in which these resources
 *        exist or should be created.
 * @throws InterruptedException If this application is interrupted while sending records to Kinesis.
 */
public static void main(String[] args) throws InterruptedException {
    if (args.length != 3) {
        System.err.println(
                "Usage: " + StreamWriter.class.getSimpleName() + " <number of threads> <stream name> <region>");
        System.exit(1);
    }

    int numberOfThreads = Integer.parseInt(args[0]);
    String streamName = args[1];
    Region region = SampleUtils.parseRegion(args[2]);

    AWSCredentialsProvider credentialsProvider = new DefaultAWSCredentialsProviderChain();
    ClientConfiguration clientConfig = SampleUtils.configureUserAgentForSample(new ClientConfiguration());
    AmazonKinesis kinesis = new AmazonKinesisClient(credentialsProvider, clientConfig);
    kinesis.setRegion(region);

    // The more resources we declare the higher write IOPS we need on our DynamoDB table.
    // We write a record for each resource every interval.
    // If interval = 500ms, resource count = 7 we need: (1000/500 * 7) = 14 write IOPS minimum.
    List<String> resources = new ArrayList<>();
    resources.add("/index.html");

    // These are the possible referrers to use when generating pairs
    List<String> referrers = new ArrayList<>();
    referrers.add("http://www.amazon.com");
    referrers.add("http://www.google.com");
    referrers.add("http://www.yahoo.com");
    referrers.add("http://www.bing.com");
    referrers.add("http://www.stackoverflow.com");
    referrers.add("http://www.reddit.com");

    HttpReferrerPairFactory pairFactory = new HttpReferrerPairFactory(resources, referrers);

    // Creates a stream to write to with 2 shards if it doesn't exist
    StreamUtils streamUtils = new StreamUtils(kinesis);
    streamUtils.createStreamIfNotExists(streamName, 2);
    LOG.info(String.format("%s stream is ready for use", streamName));

    final HttpReferrerKinesisPutter putter = new HttpReferrerKinesisPutter(pairFactory, kinesis, streamName);

    ExecutorService es = Executors.newCachedThreadPool();

    Runnable pairSender = new Runnable() {
        @Override
        public void run() {
            try {
                putter.sendPairsIndefinitely(DELAY_BETWEEN_RECORDS_IN_MILLIS, TimeUnit.MILLISECONDS);
            } catch (Exception ex) {
                LOG.warn(
                        "Thread encountered an error while sending records. Records will no longer be put by this thread.",
                        ex);
            }
        }
    };

    for (int i = 0; i < numberOfThreads; i++) {
        es.submit(pairSender);
    }

    LOG.info(String.format("Sending pairs with a %dms delay between records with %d thread(s).",
            DELAY_BETWEEN_RECORDS_IN_MILLIS, numberOfThreads));

    es.shutdown();
    es.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
}

From source file:com.google.demo.translate.Translator.java

public static void main(String[] args) {
    parseInputs();/*www  .j  a  va  2 s .c  om*/

    try {
        String headers = String.join(",", source,
                targets.stream().map(i -> i.toString()).collect(Collectors.joining(",")));

        Files.write(output, Arrays.asList(headers), UTF_8, APPEND, CREATE);

        List<String> texts = new ArrayList<>();
        while (it.hasNext()) {
            texts.add(preTranslationParser(it.next()));
            if (texts.size() == 10 || !it.hasNext()) {
                translate(texts);
                texts = new ArrayList<>();
            }
        }
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        LineIterator.closeQuietly(it);
    }
}

From source file:AverageCost.java

public static void main(String[] args) throws FileNotFoundException, IOException {
    //Directory of the n files
    String directory_path = "/home/gauss/rgrunitzki/Dropbox/Profissional/UFRGS/Doutorado/Artigo TRI15/SF Experiments/IQ-Learning/";
    BufferedReader reader = null;
    //Line to analyse
    String line = "";
    String csvDivisor = ";";
    int totalLines = 1002;
    int totalRows = 532;

    String filesToRead[] = new File(directory_path).list();
    Arrays.sort(filesToRead);//from  w w  w.  j av  a  2s. com
    System.out.println(filesToRead.length);

    List<List<DescriptiveStatistics>> summary = new ArrayList<>();

    for (int i = 0; i <= totalLines; i++) {
        summary.add(new ArrayList<DescriptiveStatistics>());
        for (int j = 0; j <= totalRows; j++) {
            summary.get(i).add(new DescriptiveStatistics());
        }
    }

    //reads all files
    for (String file : filesToRead) {
        reader = new BufferedReader(new FileReader(directory_path + file));
        int lineCounter = 0;
        //reads all file's line
        while ((line = reader.readLine()) != null) {
            if (lineCounter > 0) {
                String[] rows = line.trim().split(csvDivisor);
                //reads all line's row
                for (int r = 0; r < rows.length; r++) {
                    summary.get(lineCounter).get(r).addValue(Double.parseDouble(rows[r]));
                }
            }
            lineCounter++;
        }

        //System.out.println(file.split("/")[file.split("/").length - 1] + csvDivisor + arithmeticMean(avgCost) + csvDivisor + standardDeviation(avgCost));
    }

    //generate mean and standard deviation;
    for (List<DescriptiveStatistics> summaryLines : summary) {
        System.out.println();
        for (DescriptiveStatistics summaryLineRow : summaryLines) {
            System.out.print(summaryLineRow.getMean() + ";" + summaryLineRow.getStandardDeviation() + ";");
        }
    }
}