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:Main.java

public static final String encodeInterfereWord(String src) {
    String base = "abcdefghijklmnopqrstuvwxyz0123456789";
    Random random = new Random();
    StringBuffer sb = new StringBuffer();
    int len = base.length();
    for (int index = 0, size = src.length(); index < size; index++) {
        sb.append(base.charAt(random.nextInt(len)));
        sb.append(src.charAt(index));/*from  w  w  w.  ja va  2s.  co  m*/
    }
    sb.append(base.charAt(random.nextInt(len)));
    return sb.toString();
}

From source file:Helpers.HelpersCSV.java

/**
 * Pick random headers//from   ww w  .  j a  va  2  s.  co  m
 *
 * @param headers
 * @return
 */
public static String pickRandomColumn(String[] headers) {
    Random random = new Random();
    int index = random.nextInt(headers.length);
    String randomColumn = headers[index];
    return randomColumn;

}

From source file:nl.enovation.addressbook.jpa.webui.init.DBInit.java

public static void createItems() {
    String group;/*from  w w w.  j a v a 2 s  .  c om*/
    PhoneNumberEntry phoneNumber;
    Random r = new Random(0);

    for (String g : GROUP_NAMES) {
        group = g;

        int amount = r.nextInt(15) + 1;
        for (int i = 0; i < amount; i++) {
            Contact c = new Contact();
            c.setFirstName(FIRST_NAMES[r.nextInt(FIRST_NAMES.length)]);
            c.setLastName(LAST_NAMES[r.nextInt(LAST_NAMES.length)]);
            c.setCity(CITIES[r.nextInt(CITIES.length)]);
            int n = r.nextInt(100000);
            if (n < 10000) {
                n += 10000;
            }
            c.setZipCode("" + n);
            c.setStreet(STREETS[r.nextInt(STREETS.length)]);
            c.setDepartment(group);
            contactRepository.save(c);

            phoneNumber = new PhoneNumberEntry();
            phoneNumber
                    .setPhoneNumber("+358 02 " + r.nextInt(10) + r.nextInt(10) + r.nextInt(10) + r.nextInt(10));
            phoneNumber.setPhoneNumberType(PhoneNumberType.FAX);
            phoneNumber.setContact(c);
            c.getPhoneNumbers().add(phoneNumber);
            phoneNumberEntryRepository.save(phoneNumber);
        }
    }
}

From source file:com.cuebiq.presto.scalar.HashingFunctions.java

@Description("shuffles using a pseudo random algorithm.")
@ScalarFunction//w w  w  .  j  a v a  2  s .  co  m
@SqlType(StandardTypes.VARCHAR)
public static Slice shuffle_string(@SqlType(StandardTypes.VARCHAR) Slice string) {
    String id = string.toStringUtf8();
    Random rnd = new Random(id.charAt(0));
    byte[] bytes = id.getBytes();
    for (int i = bytes.length; i > 1; i--) {
        swap(bytes, i - 1, rnd.nextInt(i));
    }
    return Slices.wrappedBuffer(bytes);

}

From source file:org.softcatala.corrector.LanguageToolRequest.java

static private String GetSessionID() {
    Random rand = new Random();
    int MAX_NUM = 999999;
    int id = rand.nextInt(MAX_NUM);
    return Integer.toString(id);
}

From source file:ezbake.security.EzSecurityITBase.java

@BeforeClass
public static void setUpServerPool() throws Exception {
    Random portChooser = new Random();
    int port = portChooser.nextInt((34999 - 30000) + 1) + 30000;
    int zooPort = portChooser.nextInt((20499 - 20000) + 1) + 20000;

    redisServer = new LocalRedis();

    EzConfiguration ezConfiguration = new EzConfiguration(new ClasspathConfigurationLoader());
    properties = ezConfiguration.getProperties();
    properties.setProperty(EzBakePropertyConstants.REDIS_HOST, "localhost");
    properties.setProperty(EzBakePropertyConstants.REDIS_PORT, Integer.toString(redisServer.getPort()));
    properties.setProperty(EzBakePropertyConstants.ZOOKEEPER_CONNECTION_STRING,
            "localhost:" + String.valueOf(zooPort));
    properties.setProperty(FileUAService.USERS_FILENAME,
            EzSecurityITBase.class.getResource("/users.json").getFile());
    properties.setProperty(EzBakePropertyConstants.EZBAKE_ADMINS_FILE,
            EzSecurityITBase.class.getResource("/admins").getFile());
    properties.setProperty(AdminServiceModule.PUBLISHING, Boolean.TRUE.toString());

    Properties localConfig = new Properties();
    localConfig.putAll(properties);//from   ww w .  ja va 2 s  .c  o  m
    localConfig.setProperty(EzBakePropertyConstants.EZBAKE_CERTIFICATES_DIRECTORY,
            EzSecurityITBase.class.getResource("/pki/server").getFile());
    localConfig.setProperty("storage.directory", folder.getRoot().toString());

    serverPool = new ThriftServerPool(localConfig, port);
    serverPool.startCommonService(new EzSecurityHandler(), EzSecurityServicesConstants.SECURITY_SERVICE_NAME,
            "12345");
    serverPool.startCommonService(new ezbake.groups.service.EzBakeThriftService(),
            EzGroupsConstants.SERVICE_NAME, "12345");

    ServiceDiscoveryClient client = new ServiceDiscoveryClient(
            properties.getProperty(EzBakePropertyConstants.ZOOKEEPER_CONNECTION_STRING));
    client.setSecurityIdForCommonService(AppName, "10000000");
    client.setSecurityIdForApplication(AppName, "10000000");

    properties.setProperty(EzBakePropertyConstants.EZBAKE_CERTIFICATES_DIRECTORY,
            EzSecurityITBase.class.getResource("/pki/client").getFile());
    properties.setProperty(EzBakePropertyConstants.EZBAKE_SECURITY_ID, "10000000");
}

From source file:com.beginner.core.utils.Tools.java

/**
 * ?????//from   w  ww.  j a v  a  2  s  .  com
 * @return int    ???
 * @since       1.0.0
 */
public static int getRandomNum() {
    Random r = new Random();
    return r.nextInt(900000) + 100000;
}

From source file:Main.java

public static void shuffleArray(PointF[] ar, int length) {
    // If running on Java 6 or older, use `new Random()` on RHS
    Random rnd;
    if (Build.VERSION.SDK_INT >= 21)
        rnd = ThreadLocalRandom.current();
    else/*from ww  w.ja  va 2s.co m*/
        rnd = new Random();

    for (int i = length - 1; i > 0; i--) {
        int index = rnd.nextInt(i + 1);
        // Simple swap
        PointF a = ar[index];
        ar[index] = ar[i];
        ar[i] = a;
    }
}

From source file:misc.TestUtils.java

public static String randomString(Set<Character> availableChars, int maxLength, int minLength) {
    char[] chars = toCharArray(availableChars);
    Random random = new Random();
    int len = minLength + random.nextInt(maxLength - minLength + 1);
    return RandomStringUtils.random(len, chars);
}

From source file:Main.java

private static String randomMac1() {
    String chars = "ABCDE0123456789";
    String res = "";
    Random rnd = new Random();
    int leng = chars.length();
    for (int i = 0; i < 17; i++) {
        if (i % 3 == 2) {
            res = res + ":";
        } else {//w w  w. java  2 s.  co  m
            res = res + chars.charAt(rnd.nextInt(leng));
        }

    }
    return res;
}