Example usage for java.util Random nextLong

Introduction

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

Prototype

public long nextLong() 

Source Link

Document

Returns the next pseudorandom, uniformly distributed long value from this random number generator's sequence.

Usage

From source file:edu.indiana.lib.osid.component.id.Id.java

protected Id() throws org.osid.shared.SharedException {
    long base;/*  w w  w. jav  a 2s.  c  o m*/
    Random random;

    base = getIdBase();
    random = new Random(base);

    idString = String.valueOf(base) + "-" + String.valueOf(random.nextLong());
    random = null;
}

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From source file:processing.app.UpdateCheck.java

public void run() {
    //System.out.println("checking for updates...");

    // generate a random id in case none exists yet
    Random r = new Random();
    long id = r.nextLong();

    String idString = PreferencesData.get("update.id");
    if (idString != null) {
        id = Long.parseLong(idString);
    } else {// w w w.  ja v  a2s.c  o m
        PreferencesData.set("update.id", String.valueOf(id));
    }

    try {
        String info;
        info = URLEncoder.encode(
                id + "\t" + PApplet.nf(BaseNoGui.REVISION, 4) + "\t" + System.getProperty("java.version") + "\t"
                        + System.getProperty("java.vendor") + "\t" + System.getProperty("os.name") + "\t"
                        + System.getProperty("os.version") + "\t" + System.getProperty("os.arch"),
                "UTF-8");

        int latest = readInt(downloadURL + "?" + info);

        String lastString = PreferencesData.get("update.last");
        long now = System.currentTimeMillis();
        if (lastString != null) {
            long when = Long.parseLong(lastString);
            if (now - when < ONE_DAY) {
                // don't annoy the shit outta people
                return;
            }
        }
        PreferencesData.set("update.last", String.valueOf(now));

        String prompt = tr("A new version of Arduino is available,\n"
                + "would you like to visit the Arduino download page?");

        if (base.activeEditor != null) {
            if (latest > BaseNoGui.REVISION) {
                Object[] options = { tr("Yes"), tr("No") };
                int result = JOptionPane.showOptionDialog(base.activeEditor, prompt, tr("Update"),
                        JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]);
                if (result == JOptionPane.YES_OPTION) {
                    Base.openURL(tr("http://www.arduino.cc/en/Main/Software"));
                }
            }
        }
    } catch (Exception e) {
        //e.printStackTrace();
        //System.err.println("Error while trying to check for an update.");
    }
}

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From source file:terrastore.util.collect.MergeSetTest.java

@Test
public void testPerf() {
    Set<String> first = new TreeSet<String>();
    Random r1 = new Random(System.nanoTime());
    for (int i = 0; i < 100000; i++) {
        first.add("" + r1.nextLong());
    }/*from ww w.j a va2 s.  co m*/

    Set<String> second = new TreeSet<String>();
    Random r2 = new Random(System.nanoTime());
    for (int i = 0; i < 100000; i++) {
        second.add("" + r2.nextLong());
    }

    StopWatch sw = new StopWatch();
    sw.start();
    Sets.merge(first, second);
    sw.stop();
    System.out.println("Elapsed time in millis: " + sw.getTime());
}

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From source file:net.sourceforge.subsonic.controller.NetworkSettingsController.java

protected void doSubmitAction(Object cmd) throws Exception {
    NetworkSettingsCommand command = (NetworkSettingsCommand) cmd;

    settingsService.setPortForwardingEnabled(command.isPortForwardingEnabled());
    settingsService.setUrlRedirectionEnabled(command.isUrlRedirectionEnabled());
    settingsService.setUrlRedirectFrom(StringUtils.lowerCase(command.getUrlRedirectFrom()));

    if (!settingsService.isLicenseValid() && settingsService.getUrlRedirectTrialExpires() == null) {
        Date expiryDate = new Date(System.currentTimeMillis() + TRIAL_DAYS * 24L * 3600L * 1000L);
        settingsService.setUrlRedirectTrialExpires(expiryDate);
    }//w  ww.  j  ava 2s .c o  m

    if (settingsService.getServerId() == null) {
        Random rand = new Random(System.currentTimeMillis());
        settingsService.setServerId(String.valueOf(Math.abs(rand.nextLong())));
    }

    settingsService.setSubsonicUrl(StringUtils.lowerCase(command.getSubsonicUrl()));

    settingsService.save();
    networkService.initPortForwarding();
    networkService.initUrlRedirection(true);
}

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From source file:org.madsonic.controller.NetworkSettingsController.java

protected void doSubmitAction(Object cmd) throws Exception {
    NetworkSettingsCommand command = (NetworkSettingsCommand) cmd;
    command.setToast(true);/*from   w w  w  .j av  a  2  s  .  co  m*/

    settingsService.setPortForwardingEnabled(command.isPortForwardingEnabled());
    settingsService.setUrlRedirectionEnabled(command.isUrlRedirectionEnabled());
    settingsService.setUrlRedirectFrom(StringUtils.lowerCase(command.getUrlRedirectFrom()));

    //        if (settingsService.isUsePremiumServices()) {               
    //        if (!settingsService.isLicenseValid() && settingsService.getTrialExpires() == null) {
    //            Date expiryDate = new Date(System.currentTimeMillis() + TRIAL_DAYS * 24L * 3600L * 1000L);
    //            settingsService.setTrialExpires(expiryDate);
    //        }
    //        }

    if (settingsService.getServerId() == null) {
        Random rand = new Random(System.currentTimeMillis());
        settingsService.setServerId(String.valueOf(Math.abs(rand.nextLong())));
    }

    settingsService.setMadsonicUrl(StringUtils.lowerCase(command.getMadsonicUrl()));

    settingsService.save();
    networkService.initPortForwarding(0);
    networkService.initUrlRedirection(true);
}

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From source file:org.gaixie.jibu.security.service.impl.LoginServiceImpl.java

public Token generateToken(String username) {
    Connection conn = null;//from   w w w .j  a v a  2 s. co m
    Token token = null;
    try {
        conn = ConnectionUtils.getConnection();
        User user = userDAO.get(conn, username);
        if (user == null)
            return null;

        Random randomGenerator = new Random();
        long randomLong = randomGenerator.nextLong();

        //            Date date = new Date();
        Calendar calendar = Calendar.getInstance();
        //calendar.setTime(date);
        calendar.add(calendar.DAY_OF_MONTH, +1);
        long time = calendar.getTimeInMillis();
        Timestamp ts = new Timestamp(time);
        String key = MD5.encodeString(Long.toString(randomLong) + time, null);
        token = new Token(key, "password", ts, user.getId());

        tokenDAO.save(conn, token);
        DbUtils.commitAndClose(conn);
    } catch (SQLException e) {
        DbUtils.rollbackAndCloseQuietly(conn);
        logger.error(e.getMessage());
        return null;
    } finally {
        DbUtils.closeQuietly(conn);
    }
    return token;
}

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From source file:org.apache.directory.server.core.partition.impl.btree.jdbm.BTreeRedirectMarshallerTest.java

@Test
public void testRoundTripTests() throws IOException {
    byte[] bites = createBites();
    Random random = new Random();
    for (int ii = 0; ii < 100; ii++) {
        long orig = random.nextLong();
        bites = marshaller.serialize(new BTreeRedirect(orig));
        assertEquals(orig, marshaller.deserialize(bites).getRecId());
    }/*from  w  w  w .  j  av  a  2s. c  o  m*/
}

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From source file:org.diorite.commons.math.DioriteRandomUtils.java

public static long getRandomLong(Random random, long min, long max) throws IllegalArgumentException {
    if (min == max) {
        return max;
    }/* www. j a v  a 2  s .  c o  m*/
    Validate.isTrue(max > min, "Max can't be smaller than min!");
    return (Math.abs(random.nextLong()) % ((max - min) + 1)) + min;
}

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From source file:org.apache.blur.trace.hdfs.HdfsTraceStorage.java

private String getRequestIdPathName(String requestId, Random random) {
    return requestId + "_" + random.nextLong();
}

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From source file:org.apache.hadoop.mapred.TestCombineSequenceFileInputFormat.java

@Test(timeout = 10000)
public void testFormat() throws Exception {
    JobConf job = new JobConf(conf);

    Reporter reporter = Reporter.NULL;/*from  w ww  .  ja  v  a 2  s .com*/

    Random random = new Random();
    long seed = random.nextLong();
    LOG.info("seed = " + seed);
    random.setSeed(seed);

    localFs.delete(workDir, true);

    FileInputFormat.setInputPaths(job, workDir);

    final int length = 10000;
    final int numFiles = 10;

    // create a file with various lengths
    createFiles(length, numFiles, random);

    // create a combine split for the files
    InputFormat<IntWritable, BytesWritable> format = new CombineSequenceFileInputFormat<IntWritable, BytesWritable>();
    IntWritable key = new IntWritable();
    BytesWritable value = new BytesWritable();
    for (int i = 0; i < 3; i++) {
        int numSplits = random.nextInt(length / (SequenceFile.SYNC_INTERVAL / 20)) + 1;
        LOG.info("splitting: requesting = " + numSplits);
        InputSplit[] splits = format.getSplits(job, numSplits);
        LOG.info("splitting: got =        " + splits.length);

        // we should have a single split as the length is comfortably smaller than
        // the block size
        assertEquals("We got more than one splits!", 1, splits.length);
        InputSplit split = splits[0];
        assertEquals("It should be CombineFileSplit", CombineFileSplit.class, split.getClass());

        // check each split
        BitSet bits = new BitSet(length);
        RecordReader<IntWritable, BytesWritable> reader = format.getRecordReader(split, job, reporter);
        try {
            while (reader.next(key, value)) {
                assertFalse("Key in multiple partitions.", bits.get(key.get()));
                bits.set(key.get());
            }
        } finally {
            reader.close();
        }
        assertEquals("Some keys in no partition.", length, bits.cardinality());
    }
}

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