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:com.falkonry.TestAddDataStream.java

/**
 * Should add narrow data to datastream in stream JSON format
 * @throws Exception/*  www  .  j a  va  2s.com*/
 */
@Test
public void addDataJsonStream() throws Exception {

    Datastream ds = new Datastream();
    ds.setName("Test-DS1-" + Math.random());

    TimeObject time = new TimeObject();
    time.setIdentifier("time");
    time.setFormat("iso_8601");
    time.setZone("GMT");

    Signal signal = new Signal();
    signal.setTagIdentifier("tag");
    signal.setValueIdentifier("value");
    signal.setDelimiter("_");
    signal.setIsSignalPrefix(false);

    Datasource dataSource = new Datasource();
    dataSource.setType("STANDALONE");

    Field field = new Field();
    field.setSiganl(signal);
    field.setTime(time);

    ds.setDatasource(dataSource);
    ds.setField(field);

    Datastream datastream = falkonry.createDatastream(ds);
    datastreams.add(datastream);

    Map<String, String> options = new HashMap<String, String>();

    File file = new File("res/data.json");
    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(FileUtils.readFileToByteArray(file));
    InputStatus inputStatus = falkonry.addInputStream(datastream.getId(), byteArrayInputStream, options);
    Assert.assertEquals(inputStatus.getAction(), "ADD_DATA_DATASTREAM");
    Assert.assertEquals(inputStatus.getStatus(), "PENDING");
    Datastream datastream1 = falkonry.getDatastream(datastream.getId());
    Assert.assertEquals(datastream1.getId(), datastream.getId());
    Assert.assertEquals(datastream1.getName(), datastream.getName());
    Field field1 = datastream1.getField();
    Signal signal1 = field1.getSignal();
    Assert.assertEquals(signal1.getDelimiter(), signal.getDelimiter());
    Assert.assertEquals(signal1.getTagIdentifier(), signal.getTagIdentifier());
    Assert.assertEquals(signal1.getValueIdentifier(), signal.getValueIdentifier());
    Assert.assertEquals(signal1.getIsSignalPrefix(), signal.getIsSignalPrefix());
}

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From source file:MainClass.java

int rnd(int limit) {
    return ((int) (Math.random() * limit));
}

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From source file:net.floodlightcontroller.loadbalancer.LBVip.java

public LBVip() {
    this.id = String.valueOf((int) (Math.random() * 10000));
    this.name = null;
    this.tenantId = null;
    this.netId = null;
    this.address = 0;
    this.protocol = 0;
    this.lbMethod = 0;
    this.port = 0;
    this.pools = new ArrayList<String>();
    this.sessionPersistence = false;
    this.connectionLimit = 0;
    this.address = 0;
    this.status = 0;

    this.proxyMac = MACAddress.valueOf(LB_PROXY_MAC);
}

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From source file:graficarordenamiento.Graficador.java

public void crearBase(int cantidad) {
    int m = 0;//from ww  w . j ava 2  s .c  om
    for (int i = 0; i < cantidad; i++) {
        m = (int) (Math.random() * cantidad + 1);
        if (!lista.contains(m)) {
            lista.add(m);
        }
    }
}

---

From source file:com.romeikat.datamessie.core.base.util.sparsetable.SparseMultiTableTest.java

@Test
public void serializeAndDeserialize() throws Exception {

    final SparseMultiTable<Double, Double, Double> table = new SparseMultiTable<Double, Double, Double>();
    for (int i = 0; i < NUMBER_OF_ITERATIONS; i++) {
        final double rowHeader = Math.random();
        final double columnHeader = Math.random();
        final double value1 = Math.random();
        final double value2 = Math.random();
        table.putValue(rowHeader, columnHeader, value1);
        table.putValue(rowHeader, columnHeader, value2);
    }/*from ww  w.  java 2s .c  o m*/

    final byte[] serializedTable = SerializationUtils.serialize(table);
    @SuppressWarnings("unchecked")
    final SparseMultiTable<Double, Double, Double> deserializedTable = (SparseMultiTable<Double, Double, Double>) SerializationUtils
            .deserialize(serializedTable);

    assertEquals(table, deserializedTable);

}

---

From source file:com.romeikat.datamessie.core.base.util.sparsetable.SparseSingleTableTest.java

@Test
public void serializeAndDeserialize() throws Exception {

    final SparseSingleTable<Double, Double, Double> table = new SparseSingleTable<Double, Double, Double>();
    for (int i = 0; i < NUMBER_OF_ITERATIONS; i++) {
        final double rowHeader = Math.random();
        final double columnHeader = Math.random();
        final double value = Math.random();
        table.putValue(rowHeader, columnHeader, value);
    }/*from   w ww  . j  av  a2  s.c  o m*/

    final byte[] serializedTable = SerializationUtils.serialize(table);
    @SuppressWarnings("unchecked")
    final SparseSingleTable<Double, Double, Double> deserializedTable = (SparseSingleTable<Double, Double, Double>) SerializationUtils
            .deserialize(serializedTable);

    assertEquals(table, deserializedTable);

}

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From source file:it.infn.ct.futuregateway.apiserver.utils.TestDataIT.java

/**
 * Create a random infrastructure.//  w w  w .  ja va  2  s  .c o  m
 * Data are randomly generated.
 *
 * @return The infrastructure
 */
public static Infrastructure createInfrastructure() {
    Infrastructure infra = new Infrastructure();
    infra.setName(RandomStringUtils.randomAlphanumeric((int) (1 + (Math.random() * MAX_STRING_LENGTH))));
    infra.setDescription(RandomStringUtils.randomAlphanumeric((int) (1 + (Math.random() * MAX_DESC_LENGTH))));
    infra.setEnabled(rnd.nextBoolean());
    List<Params> params = (List<Params>) new LinkedList<Params>();
    for (int i = 0; i < (int) (Math.random() * MAX_ENTITIES_IN_LIST); i++) {
        Params p = new Params();
        p.setDescription(RandomStringUtils.randomAlphanumeric((int) (1 + (Math.random() * MAX_DESC_LENGTH))));
        p.setName(RandomStringUtils.randomAlphanumeric((int) (1 + (Math.random() * MAX_STRING_LENGTH))));
        p.setValue(RandomStringUtils.randomAlphanumeric((int) (1 + (Math.random() * MAX_STRING_LENGTH))));
        params.add(p);
    }
    if (!params.isEmpty()) {
        infra.setParameters(params);
    }
    return infra;
}

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From source file:com.github.jeromeroucou.javasignedurl.utils.SignedUrlUtils.java

/**
 * @return A random number to add some salt in hash encoding
 * @since 1.0/*from  w  w w.  java2  s  . co  m*/
 */
private static String getSomeSalt() {
    synchronized (SignedUrlUtils.class) {
        if (salt == null) {
            salt = String.valueOf(Math.random()).substring(2);
        }
    }
    return salt;
}

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From source file:edu.umass.cs.reconfiguration.reconfigurationpackets.DemandReport.java

/**
 * @param initiator//from   w  ww  . ja v a2s.c  o  m
 * @param name
 * @param epochNumber
 * @param stats
 */
public DemandReport(NodeIDType initiator, String name, int epochNumber, JSONObject stats) {
    super(initiator, ReconfigurationPacket.PacketType.DEMAND_REPORT, name, epochNumber);
    this.stats = stats;
    this.requestID = (long) (Math.random() * Long.MAX_VALUE);
}

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From source file:us.putney.controllers.SampleServiceController.java

static Map getHero(String name) {
    Map<String, Object> hero = new HashMap<String, Object>();
    hero.put("name", name);
    hero.put("title", titles[(int) Math.floor(Math.random() * titles.length)]);
    hero.put("age", (int) (Math.random() * 100));
    List powers = new ArrayList();
    for (int i = 0; i < 1 + Math.random() * 3; i++) {
        powers.add(getPower());/*  w  w w  . j ava2 s  . c o  m*/
    }
    hero.put("powers", powers);
    return hero;
}

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