Example usage for java.util Random nextInt

Introduction

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

Prototype

public int nextInt(int bound) 

Source Link

Document

Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.

Usage

From source file:net.sf.taverna.t2.security.credentialmanager.impl.PossibleURILookupsTest.java

@BeforeClass
public static void setUp() throws CMException, IOException {

    try {/*from  ww  w . j ava2s  .co  m*/
        credentialManager = new CredentialManagerImpl();
    } catch (CMException e) {
        System.out.println(e.getStackTrace());
    }
    Random randomGenerator = new Random();
    String credentialManagerDirectoryPath = System.getProperty("java.io.tmpdir")
            + System.getProperty("file.separator") + "taverna-security-" + randomGenerator.nextInt(1000000);
    System.out.println("Credential Manager's directory path: " + credentialManagerDirectoryPath);
    credentialManagerDirectory = new File(credentialManagerDirectoryPath);
    try {
        credentialManager.setConfigurationDirectoryPath(credentialManagerDirectory);
    } catch (CMException e) {
        System.out.println(e.getStackTrace());
    }

    // Create the dummy master password provider
    masterPasswordProvider = new DummyMasterPasswordProvider();
    /* Short password to avoid issues with key sizes and Java strong crypto policy*/
    masterPasswordProvider.setMasterPassword("uber");
    List<MasterPasswordProvider> masterPasswordProviders = new ArrayList<MasterPasswordProvider>();
    masterPasswordProviders.add(masterPasswordProvider);
    credentialManager.setMasterPasswordProviders(masterPasswordProviders);

    // Put our HTTP authenticator in the list of service username and password providers
    httpAuthProvider = new HTTPAuthenticatorServiceUsernameAndPasswordProvider();
    ArrayList<ServiceUsernameAndPasswordProvider> serviceUsernameAndPasswordProviders = new ArrayList<ServiceUsernameAndPasswordProvider>();
    serviceUsernameAndPasswordProviders.add(httpAuthProvider);
    credentialManager.setServiceUsernameAndPasswordProviders(serviceUsernameAndPasswordProviders);

    // These can be empty
    credentialManager.setJavaTruststorePasswordProviders(new ArrayList<JavaTruststorePasswordProvider>());
    credentialManager.setTrustConfirmationProviders(new ArrayList<TrustConfirmationProvider>());
}

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From source file:com.webarch.common.lang.StringSeriesTools.java

/**
 * ??/*from   w  ww  .j  a  v a  2s .  c om*/
 *
 * @return
 */
public static String getNumber6FromRandom() {
    Random r = new Random();
    int xx = r.nextInt(1000000);
    while (xx < 100000) {
        xx = r.nextInt(1000000);
    }
    return String.valueOf(xx);
}

---

From source file:Main.java

public static ArrayList<Integer> getRandomNumbers(int range, int count, Random rnd) {
    if (count > range) {
        return null;
    }/*  w  w  w.j av a2 s. com*/
    if (count < 0 || range < 0) {
        return null;
    }
    HashMap<Integer, Integer> used = new HashMap<Integer, Integer>();
    ArrayList<Integer> indices = new ArrayList<Integer>();
    int n = range;
    while (indices.size() < count) {
        Integer r = Integer.valueOf(rnd.nextInt(n));
        if (used.containsKey(r)) {
            indices.add(used.get(r));
        } else {
            indices.add(r);
        }
        addToUsed(used, r, n - 1);
        n--;
    }
    return indices;
}

---

From source file:org.dasein.cloud.azure.Azure.java

private static int getNextIndex(Random rnd, int len, char[] pswd) {
    int index = rnd.nextInt(len);
    while (pswd[index = rnd.nextInt(len)] != 0)
        ;/*from  ww  w  .j  av  a2s  .  c  o m*/
    return index;
}

---

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

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

    Random r = new Random();

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

    String ip = obj.proxyIP;//  ww w . j  a  v  a2 s  .co  m
    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 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0")
            .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);
                    System.out.println("PROX FAILURE");
                }
                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) {
                System.out.println("Response content length: " + entity.getContentLength());
                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:justdailscrapper.vik.utility.FetchPageWithoutProxy.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;//from ww  w.jav 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);
                    System.out.println("PROX FAILURE");
                }
                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) {
                System.out.println("Response content length: " + entity.getContentLength());
                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: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;//  w w  w.j av a  2 s .  c om
    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:cop.raml.utils.example.JsonExample.java

/**
 * Generates random example for given primitive {@code kind} using given {@code random} generator.
 *
 * @param kind   primitive kind type// w ww  .jav a  2  s . com
 * @param random not {@code null} random generator
 * @return generated random example for given primitive type
 */
private static Object getPrimitiveExample(TypeKind kind, @NotNull Random random) {
    if (kind == TypeKind.BOOLEAN)
        return random.nextBoolean();
    if (kind == TypeKind.BYTE)
        return (byte) random.nextInt(255);
    if (kind == TypeKind.SHORT)
        return (short) random.nextInt(1000);
    if (kind == TypeKind.INT)
        return random.nextInt(1000);
    if (kind == TypeKind.LONG)
        return (long) random.nextInt(1000);
    if (kind == TypeKind.CHAR)
        return (char) ('A' + random.nextInt(28));
    if (kind == TypeKind.FLOAT)
        return (float) random.nextInt(1000);
    if (kind == TypeKind.DOUBLE)
        return (double) random.nextInt(1000);
    return null;
}

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From source file:org.dasein.cloud.azure.Azure.java

public static char[] generatePassword(int minLen, int maxLen, int noOfCAPSAlpha, int noOfDigits,
        int noOfSpecialChars) {
    if (minLen > maxLen)
        throw new IllegalArgumentException("Min. Length > Max. Length!");
    if ((noOfCAPSAlpha + noOfDigits + noOfSpecialChars) > minLen)
        throw new IllegalArgumentException(
                "Min. Length should be atleast sum of (CAPS, DIGITS, SPL CHARS) Length!");
    Random rnd = new Random();
    int len = rnd.nextInt(maxLen - minLen + 1) + minLen;
    char[] pswd = new char[len];
    int index = 0;
    for (int i = 0; i < noOfCAPSAlpha; i++) {
        index = getNextIndex(rnd, len, pswd);
        pswd[index] = ALPHA_CAPS.charAt(rnd.nextInt(ALPHA_CAPS.length()));
    }/*from w  w  w .  j av  a 2  s.  c  o m*/
    for (int i = 0; i < noOfDigits; i++) {
        index = getNextIndex(rnd, len, pswd);
        pswd[index] = NUM.charAt(rnd.nextInt(NUM.length()));
    }
    for (int i = 0; i < noOfSpecialChars; i++) {
        index = getNextIndex(rnd, len, pswd);
        pswd[index] = SPECIAL.charAt(rnd.nextInt(SPECIAL.length()));
    }
    for (int i = 0; i < len; i++) {
        if (pswd[i] == 0) {
            pswd[i] = ALPHA.charAt(rnd.nextInt(ALPHA.length()));
        }
    }
    return pswd;
}

---

From source file:com.alicloud.tablestore.adaptor.client.IntegratedTest.java

public static byte[] generateBytes(int length) {
    StringBuilder keyBuilder = new StringBuilder(length);
    Random random = new Random();
    for (int i = 0; i < length; i++) {
        keyBuilder.append(KEY_SEED_CHARS[random.nextInt(KEY_SEED_LEN)]);
    }/*from  www  .ja  va 2s .c o  m*/
    return Bytes.toBytes(keyBuilder.toString());
}

---

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