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:io.cortical.retina.model.TestDataHarness.java

/**
 * Create dummy  {@link Fingerprint}./*from   ww  w  .ja v  a  2  s. co m*/
 * 
 * @return dummy fingerprint.
 */
public static Fingerprint createFingerprint() {
    Random random = new Random(SEED);
    Set<Integer> positionSet = new LinkedHashSet<>();
    while (positionSet.size() <= FINGERPRINT_LENGTH) {
        positionSet.add(random.nextInt(MAX_POSITION));
    }

    Integer[] positionsInteger = new Integer[FINGERPRINT_LENGTH];
    positionsInteger = positionSet.toArray(positionsInteger);
    sort(positionsInteger);
    return new Fingerprint(ArrayUtils.toPrimitive(positionsInteger));
}

---

From source file:OrdenacaoGUI.java

private static void fillRandom(int[] valores) {
    Random rand = new Random();
    for (int i = 0; i < valores.length; i++) {
        valores[i] = rand.nextInt(valores.length);
    }//w w  w.  j a  va2  s  .  co  m
}

---

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

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

    Random r = new Random();

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

    String ip = obj.proxyIP;//from   w  ww  . j a  va  2 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;
    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("400")
                || responsestatus.contains("401") || responsestatus.contains("402")
                || responsestatus.contains("403") || responsestatus.contains("407")
                || responsestatus.contains("404") || responsestatus.contains("405")
                || responsestatus.contains("SSLHandshakeException") || responsestatus.contains("999")
                || responsestatus.contains("ClientProtocolException")
                || responsestatus.contains("SocketTimeoutException") || responsestatus == null
                || "".equals(responsestatus)) {
            return null;
        } 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();
                }
            }
            EntityUtils.consume(entity);
        }
    } catch (IOException | IllegalStateException e) {
        return null;
    } finally {
        httpclient.close();
    }
    return responsebody;
}

---

From source file:ai.susi.server.AbstractAPIHandler.java

/**
 * Creates a random alphanumeric string//from  ww w .j av a  2s.  co m
 * @param length
 * @return
 */
public static String createRandomString(Integer length) {
    char[] chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".toCharArray();
    StringBuilder sb = new StringBuilder();
    Random random = new Random();
    for (int i = 0; i < length; i++) {
        char c = chars[random.nextInt(chars.length)];
        sb.append(c);
    }
    return sb.toString();
}

---

From source file:controllers.user.UserApp.java

/**
 * ??/*from  www  . ja v  a2s  .  co m*/
 */
private static void arrangeService(User currentUser) {
    List<Expert> expertList = Expert.queryCustomerServices("\"?\"", true);
    Random r = new Random();
    if (CollectionUtils.isEmpty(expertList)) { // ??
        expertList = Expert.queryCustomerServices("\"?\"", null);
    }
    if (CollectionUtils.isNotEmpty(expertList)) {
        int i = r.nextInt(expertList.size());
        Expert expert = expertList.get(i);
        // ???
        Logger.info("??  ----> ?id" + expert.userId + "id"
                + currentUser.getId() + "???" + expert.userName + "??"
                + currentUser.getName());
        String content = "";
        MCMessageUtil.pustTxtMessage(currentUser.getId(), expert.userId, currentUser.getName(),
                expert.userName == null ? "" : expert.userName, content);
        MCMessageUtil.pustTxtMessage(currentUser.getId(), expert.userId, currentUser.getName(),
                expert.userName == null ? "" : expert.userName, "");
    }
}

---

From source file:com.enderville.enderinstaller.util.InstallScript.java

/**
 * Attempts to create a temporary directory in the installer folder to
 * unpack the jar.//from   w w  w  . ja  va 2s .  c om
 *
 * @return
 * @throws IOException
 */
private static File getTempDir() throws IOException {
    Random rand = new Random();
    String hex = Integer.toHexString(rand.nextInt(Integer.MAX_VALUE));
    File tmp = new File(FilenameUtils.concat(InstallerConfig.getInstallerDir(), hex + "/"));
    int t = 0;
    while (tmp.exists() && t < 10) {
        hex = Integer.toHexString(rand.nextInt(Integer.MAX_VALUE));
        tmp = new File(FilenameUtils.normalize("./" + hex + "/"));
        t++;
    }
    if (tmp.exists()) {
        throw new IOException("Error creating temporary folder. Too many failures.");
    }
    return tmp;
}

---

From source file:edu.macalester.tagrelatedness.KendallsCorrelation.java

public static BigInteger getRandomBigInteger(int nDigits) {
    StringBuffer sb = new StringBuffer();
    java.util.Random r = new java.util.Random();
    for (int i = 0; i < nDigits; i++) {
        sb.append(r.nextInt(10));
    }/*  w ww  .j  a v  a 2 s  . c  o m*/
    return new BigInteger(sb.toString());
}

---

From source file:ecplugins.s3.TestUtils.java

public static int randInt() {
    int min = 100;
    int max = 10000;

    // NOTE: Usually this should be a field rather than a method
    // variable so that it is not re-seeded every call.
    Random rand = new Random();

    // nextInt is normally exclusive of the top value,
    // so add 1 to make it inclusive
    int randomNum = rand.nextInt((max - min) + 1) + min;

    return randomNum;
}

---

From source file:io.cortical.retina.model.TestDataHarness.java

/**
 * Create dummy  {@link Fingerprint}.// w ww . java  2  s . co m
 * @param sparsity      percentage of on bits
 * @return dummy fingerprint.
 */
public static Fingerprint createFingerprint(double sparsity) {
    Random random = new Random(SEED);
    Set<Integer> positionSet = new LinkedHashSet<>();
    while (positionSet.size() <= ((double) (MAX_POSITION)) * sparsity) {
        positionSet.add(random.nextInt(MAX_POSITION));
    }

    Integer[] positionsInteger = new Integer[FINGERPRINT_LENGTH];
    positionsInteger = positionSet.toArray(positionsInteger);
    sort(positionsInteger);
    return new Fingerprint(ArrayUtils.toPrimitive(positionsInteger));
}

---

From source file:com.geekandroid.sdk.pay.impl.CHWeiXinPay.java

private static String genNonceStr() {
    Random random = new Random();
    return MD5.getMessageDigest(String.valueOf(random.nextInt(10000)).getBytes());
}

---

• «
• 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
• »