Example usage for java.util Random Random

List of usage examples for java.util Random Random

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Introduction

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

Prototype

public Random()

Source Link

Document

Creates a new random number generator.

Usage

From source file:Main.java

public static String generateRandomDate() {
    Random r = new Random();
    java.util.Calendar c = java.util.Calendar.getInstance();
    c.set(java.util.Calendar.MONTH, Math.abs(r.nextInt()) % 12);
    c.set(java.util.Calendar.DAY_OF_MONTH, Math.abs(r.nextInt()) % 30);
    c.setLenient(true);//ww w  .j ava  2 s.  c  om
    return DATE_FORMAT.format(c.getTime());
}

From source file:fixio.netty.pipeline.client.SimpleFixSessionSettingsProviderTest.java

@BeforeClass
public static void setUp() {
    beginString = randomAscii(5);//from ww  w  .  j av  a2 s.c  om
    senderCompID = randomAscii(5);
    senderSubID = randomAscii(5);
    targetCompID = randomAscii(5);
    targetSubID = randomAscii(5);
    resetMsgSeqNum = true;
    heartbeatInterval = new Random().nextInt(100) + 1;

    settingsProvider = new SimpleFixSessionSettingsProvider();
    settingsProvider.setBeginString(beginString);
    settingsProvider.setSenderCompID(senderCompID);
    settingsProvider.setSenderSubID(senderSubID);
    settingsProvider.setTargetCompID(targetCompID);
    settingsProvider.setTargetSubID(targetSubID);
    settingsProvider.setResetMsgSeqNum(resetMsgSeqNum);
    settingsProvider.setHeartbeatInterval(heartbeatInterval);
}

From source file:logica.Array.java

public void llenar(int _CantidadMaxima) {
    Random rnd = new Random();
    for (int i = 0; i < _CantidadMaxima; i++) {
        array.add(rnd.nextInt(1000));//from   w w  w  . j  ava  2 s  .  c om
    }
}

From source file:justdailscrapper.vik.utility.FetchPageWithProxy.java

public static String fetchPageSourcefromClientGoogle(URI newurl, List<ProxyImport> proxyList)
        throws IOException, InterruptedException {

    Random r = new Random();

    ProxyImport obj = proxyList.get(r.nextInt(proxyList.size()));

    String ip = obj.proxyIP;//www  .j a v a  2 s.  com
    int portno = Integer.parseInt(obj.proxyPort);
    String username = "";
    String password = "";
    if (obj.proxyLen > 2) {
        username = obj.proxyUserName;
        password = obj.proxyPassword;
    }

    //        int portNo = generateRandomPort();
    CredentialsProvider credsprovider = new BasicCredentialsProvider();
    credsprovider.setCredentials(new AuthScope(ip, portno),
            new UsernamePasswordCredentials(username, password));
    HttpHost proxy = new HttpHost(ip, portno);
    //-----------------------------------------------------------------------
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(5000).setConnectTimeout(5000)
            .setConnectionRequestTimeout(5000).build();

    CloseableHttpClient httpclient = HttpClients.custom().setDefaultCredentialsProvider(credsprovider)
            .setUserAgent("Mozilla/5.0 (Windows NT 6.3; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0")
            .setDefaultRequestConfig(requestConfig).setProxy(proxy).build();
    String responsebody = "";
    String responsestatus = null;
    int count = 0;
    try {
        HttpGet httpget = new HttpGet(newurl);
        httpget.addHeader("Accept", "*/*");
        httpget.addHeader("Accept-Encoding", "gzip, deflate, br");
        httpget.addHeader("Accept-Language", "en-US,en;q=0.5");
        httpget.addHeader("Host", "www.justdial.com");
        httpget.addHeader("Referer", "https://www.justdial.com/Bangalore/Yamaha-Two-Wheeler-Dealers");
        httpget.addHeader("Connection", "keep-alive");
        httpget.addHeader("X-Requested-With", "XMLHttpReques");

        System.out.println("Response status " + httpget.getRequestLine());
        CloseableHttpResponse resp = httpclient.execute(httpget);
        responsestatus = resp.getStatusLine().toString();
        if (responsestatus.contains("503") || responsestatus.contains("502") || responsestatus.contains("403")
                || responsestatus.contains("400") || responsestatus.contains("407")
                || responsestatus.contains("401") || responsestatus.contains("402")
                || responsestatus.contains("404") || responsestatus.contains("405")
                || responsestatus.contains("SSLHandshakeException") || responsestatus.contains("999")
                || responsestatus.contains("ClientProtocolException")
                || responsestatus.contains("SocketTimeoutException") || "".equals(responsestatus)) {
            Thread.sleep(10000);
            do {
                count++;
                responsebody = fetchPageSourcefromClientGoogleSecond(newurl, proxyList);
                if (responsebody == null) {
                    Thread.sleep(10000);
                    logTextArea.append("PROX FAILURE\n");
                }
                if (count > 20) {
                    Thread.sleep(1000);
                    break;
                }
            } while (responsebody == null || "".equals(responsebody));
        } else {
            HttpEntity entity = resp.getEntity();
            System.out.println(resp.getStatusLine());
            if (entity != null) {
                logTextArea.append("Response content length: " + entity.getContentLength() + "\n");
                BufferedReader in = new BufferedReader(new InputStreamReader(entity.getContent()));
                String inputLine;
                while ((inputLine = in.readLine()) != null) {
                    responsebody = new StringBuilder().append(responsebody).append(inputLine).toString();
                }
                // writeResponseFile(responsebody, pagename);
            }
            EntityUtils.consume(entity);
        }
    } catch (IOException | IllegalStateException e) {
        System.out.println("Exception = " + e);
        do {
            count++;
            responsebody = fetchPageSourcefromClientGoogleSecond(newurl, proxyList);
            if (responsebody == null) {
                System.out.println("PROX FAILURE");
            }
            if (count > 15) {
                Thread.sleep(50000);
                //                    responsebody = fetchPageSourcefromClientGoogleSecond(newurl);
                break;
            }
        } while (responsebody == null || "".equals(responsebody));
    } finally {
        httpclient.close();
    }
    return responsebody;
}

From source file:com.zb.app.common.util.SerialNumGenerator.java

private static String getSuffix(Long id) {
    Long num = 1l;//from  w w w  .  j ava 2s . c o  m
    Random random = new Random();
    if (id != null) {
        num = id * (random.nextInt(1000));
        if (num < 100) {
            num = num * (random.nextInt());
        }
        num = (id * (random.nextInt(1000))) % 100000;// id??
    }

    StringBuffer suffixBuffer = new StringBuffer();
    suffixBuffer.append(String.valueOf(num)).append(random.nextInt(1000));
    return StringUtils.leftPad(suffixBuffer.toString(), 8, '0');
}

From source file:Business.PDU.java

private static byte[] formataPDU() {
    byte[] pdu = new byte[8];
    short num;//from w  ww. j av  a  2  s .  c o  m
    Random rng = new Random();

    num = (short) rng.nextInt(100);
    while (num == 0)
        num = (short) rng.nextInt(100);
    pdu[0] = 0; //Versao
    pdu[1] = 0; //segurana
    pdu[2] = (byte) (num & 0xff);
    pdu[3] = (byte) ((num >> 8) & 0xff);

    return pdu;
}

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    Rectangle clip = g.getClipBounds();
    g.setColor(new Color(new Random().nextInt()));
    g.fillRect(clip.x, clip.y, clip.width, clip.height);
}

From source file:Consumer.java

public void run() {
    Random rand = new Random();
    while (true) {
        int n = rand.nextInt();
        buffer.produce(n);/*from  w  ww.j  a  v  a 2 s  .  co  m*/
    }
}

From source file:org.sharetask.utility.SecurityUtil.java

/**
 * Generate password from alpha numerics characters in total length 8 characters. 
 * @return//from w w  w  .  java 2  s .  co m
 */
public static String generatePassword() {
    final char[] chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".toCharArray();
    final StringBuilder sb = new StringBuilder();
    final Random random = new Random();

    for (int i = 0; i < PASSWORD_LENGT; i++) {
        final char c = chars[random.nextInt(chars.length)];
        sb.append(c);
    }
    return sb.toString();
}

From source file:fr.xebia.demo.wicket.blog.service.AbstractServiceTest.java

@BeforeClass
public static void setUpClass() {
    randomizer = new Random();
    long startTime = System.currentTimeMillis();
    logger.info("Initializing Services");
    ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
    URL configuration = contextClassLoader.getResource("applicationContext-service.xml");
    factory = new XmlBeanFactory(new UrlResource(configuration));
    long endTime = System.currentTimeMillis();
    logger.info("Initialisation des services en " + ((endTime - startTime) / 1000.0) + " s");
}