Example usage for java.lang Math random

Introduction

In this page you can find the example usage for java.lang Math random.

Prototype

public static double random()

Source Link

Document

Returns a double value with a positive sign, greater than or equal to 0.0 and less than 1.0 .

Usage

From source file:baggage.BaseTestCase.java

protected void setUp() throws Exception {
    eventQueue = new LinkedBlockingQueue<String>();
    randomInt = (int) (Math.random() * 100000d);
    randomByte = (byte) (Math.random() * 127d);
    randomLong = randomLong();//from  ww  w  .  j  av  a  2 s  . c  o  m
    randomString = randomString(32);
}

From source file:com.almende.eve.ggdemo.DAALampAgent.java

public void scheduleLamps() {
    checkLamps();
    schedule("scheduleLamps", null, 1000 + Math.round(Math.random() * 5000));
}

From source file:com.pinterest.terrapin.client.ReplicatedTerrapinClient.java

Pair<TerrapinClient, TerrapinClient> getClientTuple(RequestOptions options) {
    if (primaryClient == null || secondaryClient == null) {
        return new ImmutablePair(primaryClient == null ? secondaryClient : primaryClient, null);
    }//from w w w.j  ava 2 s  .  c  o  m
    boolean primaryFirst = Math.random() < 0.5;
    final TerrapinClient firstClient = options.selectionPolicy == SelectionPolicy.PRIMARY_FIRST ? primaryClient
            : (primaryFirst ? primaryClient : secondaryClient);
    final TerrapinClient secondClient = firstClient == primaryClient ? secondaryClient : primaryClient;
    return new ImmutablePair(firstClient, secondClient);
}

From source file:alpha.portal.webapp.controller.BaseControllerTestCase.java

/**
 * On set up.//from   ww w  .j av  a2  s .c o  m
 */
@Before
public void onSetUp() {
    this.smtpPort = this.smtpPort + (int) (Math.random() * 100);
    // change the port on the mailSender so it doesn't conflict with an
    // existing SMTP server on localhost
    final JavaMailSenderImpl mailSender = (JavaMailSenderImpl) this.applicationContext.getBean("mailSender");
    mailSender.setPort(this.getSmtpPort());
    mailSender.setHost("localhost");
}

From source file:com.bt.aloha.batchtest.v2.ScenarioRunner.java

private String generateId() {
    final String randomString = System.currentTimeMillis() + "scenario" + Math.random();
    String name = this.scenario.getClass().getSimpleName();
    return String.format("%s:%s", name, MessageDigestHelper.generateDigest(randomString));
}

From source file:binky.reportrunner.ui.actions.admin.GetAuditHistoryAction.java

@Override
@PreAuthorize("hasRole('ROLE_ADMIN')")
public String execute() throws Exception {

    try {//from w w  w.j ava2s  . co  m
        logger.trace("module: " + module);

        this.longestEvents = auditService.getLongestRunningEvents(module, fromDate, toDate);

        this.latestFailEvents = auditService.getFailedEvents(module, fromDate, toDate);
        showLongest = true;
        random = Math.round(Math.random() * 1000000);
    } catch (Throwable t) {
        //effing struts eating up exceptions
        logger.fatal("error in ajax call to get log data", t);
        if (t instanceof Exception)
            throw (Exception) t;
    }
    return SUCCESS;
}

From source file:com.cotrino.knowledgemap.db.Question.java

private void generateQuestion(Page page, List<String> sentences) {

    int firstSentence = (int) Math.round(Math.random() * (sentences.size() - QUESTION_SENTENCES));
    String question = "";
    for (int i = firstSentence; i < firstSentence + QUESTION_SENTENCES; i++) {
        question += sentences.get(i);/*from   w  w  w  . ja va 2s.  c o m*/
    }
    Matcher matcher = LINK_PATTERN.matcher(question);
    List<Integer> matchStart = new LinkedList<Integer>();
    List<Integer> matchEnd = new LinkedList<Integer>();
    List<String> matchLink = new LinkedList<String>();
    while (matcher.find()) {
        String link = matcher.group(1);
        if (!link.contains(":")) {
            matchStart.add(matcher.start());
            matchEnd.add(matcher.end());
            matchLink.add(link);
        }
    }
    if (matchLink.size() > 0) {
        int linkToBeReplaced = (int) Math.round(Math.random() * (matchLink.size() - 1));
        int start = matchStart.get(linkToBeReplaced);
        int end = matchEnd.get(linkToBeReplaced);
        String link = matchLink.get(linkToBeReplaced);
        String[] answers = link.split("\\|");
        for (String answer : answers) {
            this.answers.add(answer);
        }
        String placeholder = link.replaceAll("[^ \\|]", ".");
        if (placeholder.contains("|")) {
            placeholder = placeholder.split("\\|")[1];
        }
        String text = question.substring(0, start) + "<span class='placeholder'>" + placeholder + "</span>"
                + question.substring(end);
        // replace other links of the kind [[A|B]] with A 
        text = text.replaceAll("\\[\\[[^\\]\\|]+\\|", "");
        // replace other links of the kind [[A]] with A
        text = text.replaceAll("\\[\\[", "").replaceAll("\\]\\]", "");
        //System.out.println("Question: "+text);
        this.question = text;
        this.page = page;
    }

}

From source file:org.hsweb.web.oauth2.service.OAuth2ClientServiceImpl.java

@Override
public String insert(OAuth2Client data) {
    data.setSecret(MD5.encode(UUID.randomUUID().toString() + Math.random()));
    data.setStatus(1);//from w ww  .jav  a 2 s  . c om
    return super.insert(data);
}

From source file:com.makariev.dynamodb.data.PopulateDataService.java

public String populateUserPreferences(@DsLabel("number of users") int numberOfItems,
        @DsLabel("name prefix") String namePrefix) {
    for (int i = 0; i < numberOfItems; i++) {
        final UserPreference userPreference = new UserPreference();
        userPreference.setUserNo((int) (Math.random() * 10000));
        userPreference.setFirstName(namePrefix + "-first-" + i);
        userPreference.setLastName(namePrefix + "-last-" + i);
        userPreferenceService.save(userPreference);
    }//  w  ww.  j  a  va 2  s .c  o m
    return "Created " + numberOfItems + " UserPreference, with prefix=" + namePrefix;
}

From source file:com.ideabase.repository.core.service.HashMapStateManagerImpl.java

public String generateRequestStateToken() {
    final StringBuilder builder = new StringBuilder();
    builder.append(mPrefix).append(System.nanoTime()).append(Math.random() * 100).append(mSuffix);
    return DigestUtils.shaHex(builder.toString());
}