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() 

Source Link

Document

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

Usage

From source file:org.brekka.stillingar.example.PropertyPlaceholdersTest.java

private static Configuration writeConfig() {
    Random r = new Random();
    ConfigurationDocument doc = ConfigurationDocument.Factory.newInstance();
    configuration = doc.addNewConfiguration();
    Testing testing = configuration.addNewTesting();
    configuration.setMOTD("Value_" + RandomStringUtils.randomAlphabetic(6));
    testing.setInt(r.nextInt());
    testing.setString("${//c:MOTD}-${//c:Testing/c:Int}");
    ThirdPartyConfiguration thirdPartyConfiguration = configuration.addNewThirdPartyConfiguration();
    thirdPartyConfiguration.setHost("localhost");
    thirdPartyConfiguration.setPort(1234);
    thirdPartyConfiguration.setUsername("username");
    thirdPartyConfiguration.setPassword("password");
    TestSupport.write(doc);// ww  w  .j a va 2s. co  m
    return configuration;
}

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From source file:com.monitor.baseservice.utils.XCodeUtil.java

public static String createPrefix(int prefixLength) {
    Random random = new Random();
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < prefixLength; i++) {
        int tmp = random.nextInt();
        if (tmp < 0) {
            tmp = -tmp;// w  ww  . j  a va  2  s.  c om
        }
        int index = tmp % digits.length();
        sb.append(digits.charAt(index));
    }

    return sb.toString();
}

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From source file:Main.java

/**
 * Generates a random word./*  w  w w  .  jav  a 2s  . c  o  m*/
 */
public static String generateWord(final Random random, final int[] codePointSet) {
    StringBuilder builder = new StringBuilder();
    // 8 * 4 = 32 chars max, but we do it the following way so as to bias the random toward
    // longer words. This should be closer to natural language, and more importantly, it will
    // exercise the algorithms in dicttool much more.
    final int count = 1 + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5)
            + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5)
            + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5)
            + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5);
    while (builder.length() < count) {
        builder.appendCodePoint(codePointSet[Math.abs(random.nextInt()) % codePointSet.length]);
    }
    return builder.toString();
}

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From source file:de.bund.bfr.knime.pmm.common.math.MathUtilities.java

public static int generateID(int seed) {
    Random rand = new Random(seed);
    int id = rand.nextInt();

    if (id > 0) {
        id = -id;//from  w  w w  . ja v  a2s  .c om
    }

    return id;
}

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From source file:de.hub.cs.dbis.aeolus.queries.utils.TimestampMergerTest.java

@BeforeClass
public static void prepareStatic() {
    long seed = System.currentTimeMillis();
    Random r = new Random(seed);
    System.out.println("Static test seed: " + seed);

    tsIndex = r.nextInt();
    if (tsIndex < 0) {
        tsIndex *= -1;// w ww . ja v a2s . c om
    }

    duplicates = r.nextBoolean();

    boltMockStatic = mock(IRichBolt.class);
    when(boltMockStatic.getComponentConfiguration()).thenReturn(boltConfig);

    checker = new TimestampOrderChecker(boltMockStatic, tsIndex, duplicates);
}

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From source file:com.linkedin.pinot.core.segment.index.creator.RawIndexCreatorTest.java

/**
 * Helper method that generates a random value for a given data type
 *
 * @param dataType Data type for which to generate the random value
 * @return Random value for the data type.
 *//* w  w w.ja  v a 2s . c o m*/
public static Object getRandomValue(Random random, FieldSpec.DataType dataType) {
    Object value;
    switch (dataType) {
    case INT:
        value = random.nextInt();
        break;

    case LONG:
        value = random.nextLong();
        break;

    case FLOAT:
        value = random.nextFloat();
        break;

    case DOUBLE:
        value = random.nextDouble();
        break;

    case STRING:
        value = StringUtil
                .trimTrailingNulls(RandomStringUtils.random(random.nextInt(MAX_STRING_LENGTH_IN_BYTES)));
        break;

    default:
        throw new IllegalArgumentException("Illegal data type for random value generator: " + dataType);
    }
    return value;
}

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From source file:Main.java

/**
 * Generates a random word.//from w ww  .j  ava2  s  . c om
 */

@Nonnull
public static String generateWord(@Nonnull final Random random, @Nonnull final int[] codePointSet) {
    final StringBuilder builder = new StringBuilder();
    // 8 * 4 = 32 chars max, but we do it the following way so as to bias the random toward
    // longer words. This should be closer to natural language, and more importantly, it will
    // exercise the algorithms in dicttool much more.
    final int count = 1 + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5)
            + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5)
            + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5)
            + (Math.abs(random.nextInt()) % 5) + (Math.abs(random.nextInt()) % 5);
    while (builder.length() < count) {
        builder.appendCodePoint(codePointSet[Math.abs(random.nextInt()) % codePointSet.length]);
    }
    return builder.toString();
}

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From source file:UnixCrypt.java

public static final String crypt(String original) {
    Random randomGenerator = new Random();
    int numSaltChars = saltChars.length;
    String salt = "" + saltChars[Math.abs(randomGenerator.nextInt()) % numSaltChars]
            + saltChars[Math.abs(randomGenerator.nextInt()) % numSaltChars];
    return crypt(salt, original);
}

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From source file:de.hub.cs.dbis.aeolus.utils.TimestampMergerTest.java

@BeforeClass
public static void prepareStatic() {
    // final long seed = System.currentTimeMillis();
    final long seed = 1432597577997L;
    Random r = new Random(seed);
    System.out.println("Static test seed: " + seed);

    tsIndex = r.nextInt();
    if (tsIndex < 0) {
        tsIndex *= -1;/*w  w w .j a  va  2s  . co  m*/
    }

    duplicates = r.nextBoolean();

    boltMockStatic = mock(IRichBolt.class);
    when(boltMockStatic.getComponentConfiguration()).thenReturn(boltConfig);

    checker = new TimestampOrderChecker(boltMockStatic, tsIndex, duplicates);
}

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From source file:com.ikanow.aleph2.analytics.storm.utils.TestStormControllerUtil_Cache.java

private static File createFakeZipFile(String file_name) throws IOException {
    File file;/* w  ww  .j  a va  2s . c  om*/
    if (file_name == null)
        file = File.createTempFile("recent_date_test_", ".zip");
    else
        file = new File(file_name);
    Random r = new Random();
    ZipOutputStream outputZip = new ZipOutputStream(new FileOutputStream(file));
    ZipEntry e = new ZipEntry("some_file.tmp");
    outputZip.putNextEntry(e);
    outputZip.write(r.nextInt());
    outputZip.close();
    return file;
}

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