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:sf.wicketlearningapplication.server.TestUtility.java

public static Bug createNewBugInstance() {
    final int estimatedHours = random.nextInt(8) + 1;
    final Severity severity = Severity.values()[(int) (Math.random() * Severity.values().length)];
    final Calendar calendar = Calendar.getInstance();
    calendar.add(Calendar.DAY_OF_MONTH, random.nextInt(30));
    ////w  ww  .jav  a  2 s  .  c o  m
    final Bug bug = new Bug();
    bug.setSummary(text());
    bug.setSeverity(severity);
    bug.setEstimatedHours(estimatedHours);
    bug.setDueByDate(calendar.getTime());
    return bug;
}

From source file:org.esigate.url.StickySessionBaseUrlRetrieveStrategy.java

private int generateIndex() {
    return (int) (Math.random() * this.urls.length);
}

From source file:br.ifes.poo2.chess.cln.cdp.players.factories.PlayerComputer.java

public String play(Color color, Game game) {
    Iterator<Piece> iterator = game.getPiecesOfPlayer(color);
    List<Piece> listOfPieces = IteratorUtils.toList(iterator);
    List<Position> positions;
    int rand;/*w w w.  j av  a 2 s .  c  o  m*/
    Piece piece;

    Position positionAux;
    int count = 0;
    while (count < 50) {
        if (listOfPieces.size() > 0) {
            rand = (int) (Math.random() * (listOfPieces.size() - 1));
            piece = listOfPieces.get(rand);

            positions = piece.getPath(game.getChessBoard(), piece.getPosition());

            if (positions.size() > 0) {
                rand = (int) (Math.random() * (positions.size() - 1));
                positionAux = positions.get(rand);

                return "" + piece.getPosition().getColumn() + piece.getPosition().getLine()
                        + positionAux.getColumn() + positionAux.getLine();
            }

        }
        count++;
    }
    return "desistir";
}

From source file:org.pikax.log.generator.process.v1.CheckPaymentDelegate.java

@Override
public void doExecute(final DelegateExecution execution) throws Exception {
    final double seed = Math.random();
    if (seed < 0.2) {
        execution.setVariable("payment", "notok");
    } else {/* w  w  w.  jav  a2  s  . c o  m*/
        execution.setVariable("payment", "ok");
    }
}

From source file:dtu.ds.warnme.utils.RandomUtils.java

public static int randomInt(int min, int max) {
    return (int) (min + Math.random() * (max - min + 1));
}

From source file:org.pikax.log.generator.process.v1.ProcessClaimDelegate.java

@Override
public void doExecute(final DelegateExecution execution) throws Exception {
    final double seed = Math.random();
    if (seed < 0.2) {
        execution.setVariable("claim", "rejected");
    } else if (seed < 0.72) {
        execution.setVariable("claim", "ok");
    } else {/*w w w . j  a  v a  2  s .  co m*/
        execution.setVariable("claim", "behind");
    }
}

From source file:com.falkonry.TestAddFactsStream.java

/**
 * Should create datastream and add fact stream data in CSV format
 * @throws Exception/*  ww  w. j a  v a 2  s .  c  o  m*/
 */
@Test
public void createDatastreamWithCsvFactsStream() throws Exception {

    Datastream ds = new Datastream();
    ds.setName("Test-DS-" + 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);

    Field field = new Field();
    field.setSiganl(signal);
    field.setTime(time);
    ds.setField(field);
    Datasource dataSource = new Datasource();
    dataSource.setType("STANDALONE");
    ds.setDatasource(dataSource);

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

    List<Assessment> assessments = new ArrayList<Assessment>();
    AssessmentRequest assessmentRequest = new AssessmentRequest();
    assessmentRequest.setName("Health");
    assessmentRequest.setDatastream(datastream.getId());
    assessmentRequest.setAssessmentRate("PT1S");
    Assessment assessment = falkonry.createAssessment(assessmentRequest);
    assessments.add(assessment);

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

    String data = "time, tag, value\n2016-03-01 01:01:01, entity1_signal1, 3.4";
    falkonry.addInput(datastream.getId(), data, options);

    File file = new File("res/factsData.csv");
    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(FileUtils.readFileToByteArray(file));

    InputStatus response = falkonry.addFactsStream(assessment.getId(), byteArrayInputStream, null);
    Assert.assertEquals(response.getAction(), "ADD_FACT_DATA");
    Assert.assertEquals(response.getStatus(), "PENDING");
}

From source file:de.undercouch.citeproc.script.ScriptRunnerBenchmark.java

/**
 * Set up this test/*from  w  w w.  ja  va  2 s  .  c  om*/
 * @throws Exception if something goes wrong
 */
@BeforeClass
public static void setUp() throws Exception {
    db = loadUnixDatabase();
    sys.addDatabase(db);

    for (int i = 0; i < 10; ++i) {
        int j = (int) (Math.random() * db.getEntries().size());
        rnds.add(j);
    }
}

From source file:com.linkedin.pinot.common.utils.KafkaStarterUtils.java

public static List<KafkaServerStartable> startServers(final int brokerCount, final int port, final String zkStr,
        final Properties configuration) {
    List<KafkaServerStartable> startables = new ArrayList<>(brokerCount);

    for (int i = 0; i < brokerCount; i++) {
        startables.add(startServer(port + i, i, zkStr, "/tmp/kafka-" + Double.toHexString(Math.random()),
                configuration));//w  w w .  j  a va2 s . c  o  m
    }

    return startables;
}

From source file:com.jennifer.ui.util.StringUtil.java

public static String createId(String key) {
    return key + "-" + System.currentTimeMillis() + "-" + (Math.round(Math.random() * 100) % 100);
}